Mercurial > hg > truffle
annotate src/share/vm/prims/forte.cpp @ 17726:085b304a1cc5
8027754: Enable loop optimizations for loops with MathExact inside
Reviewed-by: kvn, iveresov
author | rbackman |
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date | Thu, 23 Jan 2014 12:08:28 +0100 |
parents | 55fb97c4c58d |
children | d16be2b85802 a9becfeecd1b |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "code/debugInfoRec.hpp" | |
27 #include "code/pcDesc.hpp" | |
28 #include "gc_interface/collectedHeap.inline.hpp" | |
29 #include "memory/space.hpp" | |
30 #include "memory/universe.inline.hpp" | |
31 #include "oops/oop.inline.hpp" | |
32 #include "oops/oop.inline2.hpp" | |
33 #include "prims/forte.hpp" | |
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34 #include "runtime/javaCalls.hpp" |
1972 | 35 #include "runtime/thread.hpp" |
36 #include "runtime/vframe.hpp" | |
37 #include "runtime/vframeArray.hpp" | |
0 | 38 |
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39 // call frame copied from old .h file and renamed |
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40 typedef struct { |
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41 jint lineno; // line number in the source file |
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42 jmethodID method_id; // method executed in this frame |
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43 } ASGCT_CallFrame; |
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44 |
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45 // call trace copied from old .h file and renamed |
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46 typedef struct { |
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47 JNIEnv *env_id; // Env where trace was recorded |
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48 jint num_frames; // number of frames in this trace |
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49 ASGCT_CallFrame *frames; // frames |
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50 } ASGCT_CallTrace; |
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51 |
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52 // These name match the names reported by the forte quality kit |
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53 enum { |
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54 ticks_no_Java_frame = 0, |
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55 ticks_no_class_load = -1, |
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56 ticks_GC_active = -2, |
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57 ticks_unknown_not_Java = -3, |
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58 ticks_not_walkable_not_Java = -4, |
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59 ticks_unknown_Java = -5, |
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60 ticks_not_walkable_Java = -6, |
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61 ticks_unknown_state = -7, |
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62 ticks_thread_exit = -8, |
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63 ticks_deopt = -9, |
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64 ticks_safepoint = -10 |
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65 }; |
0 | 66 |
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67 #if INCLUDE_JVMTI |
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68 |
0 | 69 //------------------------------------------------------- |
70 | |
71 // Native interfaces for use by Forte tools. | |
72 | |
73 | |
74 #ifndef IA64 | |
75 | |
76 class vframeStreamForte : public vframeStreamCommon { | |
77 public: | |
78 // constructor that starts with sender of frame fr (top_frame) | |
79 vframeStreamForte(JavaThread *jt, frame fr, bool stop_at_java_call_stub); | |
80 void forte_next(); | |
81 }; | |
82 | |
83 | |
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84 static bool is_decipherable_compiled_frame(JavaThread* thread, frame* fr, nmethod* nm); |
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85 static bool is_decipherable_interpreted_frame(JavaThread* thread, |
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86 frame* fr, |
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87 Method** method_p, |
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88 int* bci_p); |
0 | 89 |
90 | |
91 | |
92 | |
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93 vframeStreamForte::vframeStreamForte(JavaThread *jt, |
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94 frame fr, |
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95 bool stop_at_java_call_stub) : vframeStreamCommon(jt) { |
0 | 96 |
97 _stop_at_java_call_stub = stop_at_java_call_stub; | |
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98 _frame = fr; |
0 | 99 |
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100 // We must always have a valid frame to start filling |
0 | 101 |
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102 bool filled_in = fill_from_frame(); |
0 | 103 |
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104 assert(filled_in, "invariant"); |
0 | 105 |
106 } | |
107 | |
108 | |
109 // Solaris SPARC Compiler1 needs an additional check on the grandparent | |
110 // of the top_frame when the parent of the top_frame is interpreted and | |
111 // the grandparent is compiled. However, in this method we do not know | |
112 // the relationship of the current _frame relative to the top_frame so | |
113 // we implement a more broad sanity check. When the previous callee is | |
114 // interpreted and the current sender is compiled, we verify that the | |
115 // current sender is also walkable. If it is not walkable, then we mark | |
116 // the current vframeStream as at the end. | |
117 void vframeStreamForte::forte_next() { | |
118 // handle frames with inlining | |
119 if (_mode == compiled_mode && | |
120 vframeStreamCommon::fill_in_compiled_inlined_sender()) { | |
121 return; | |
122 } | |
123 | |
124 // handle general case | |
125 | |
126 int loop_count = 0; | |
127 int loop_max = MaxJavaStackTraceDepth * 2; | |
128 | |
129 | |
130 do { | |
131 | |
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132 loop_count++; |
0 | 133 |
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134 // By the time we get here we should never see unsafe but better |
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135 // safe then segv'd |
0 | 136 |
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137 if (loop_count > loop_max || !_frame.safe_for_sender(_thread)) { |
0 | 138 _mode = at_end_mode; |
139 return; | |
140 } | |
141 | |
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142 _frame = _frame.sender(&_reg_map); |
0 | 143 |
144 } while (!fill_from_frame()); | |
145 } | |
146 | |
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147 // Determine if 'fr' is a decipherable compiled frame. We are already |
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148 // assured that fr is for a java nmethod. |
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149 |
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150 static bool is_decipherable_compiled_frame(JavaThread* thread, frame* fr, nmethod* nm) { |
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151 assert(nm->is_java_method(), "invariant"); |
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152 |
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153 if (thread->has_last_Java_frame() && thread->last_Java_pc() == fr->pc()) { |
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154 // We're stopped at a call into the JVM so look for a PcDesc with |
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155 // the actual pc reported by the frame. |
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156 PcDesc* pc_desc = nm->pc_desc_at(fr->pc()); |
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157 |
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158 // Did we find a useful PcDesc? |
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159 if (pc_desc != NULL && |
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160 pc_desc->scope_decode_offset() != DebugInformationRecorder::serialized_null) { |
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161 return true; |
0 | 162 } |
163 } | |
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164 |
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165 // We're at some random pc in the nmethod so search for the PcDesc |
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166 // whose pc is greater than the current PC. It's done this way |
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167 // because the extra PcDescs that are recorded for improved debug |
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168 // info record the end of the region covered by the ScopeDesc |
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169 // instead of the beginning. |
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170 PcDesc* pc_desc = nm->pc_desc_near(fr->pc() + 1); |
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171 |
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172 // Now do we have a useful PcDesc? |
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173 if (pc_desc == NULL || |
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174 pc_desc->scope_decode_offset() == DebugInformationRecorder::serialized_null) { |
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175 // No debug information available for this pc |
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176 // vframeStream would explode if we try and walk the frames. |
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177 return false; |
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178 } |
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179 |
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180 // This PcDesc is useful however we must adjust the frame's pc |
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181 // so that the vframeStream lookups will use this same pc |
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182 fr->set_pc(pc_desc->real_pc(nm)); |
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183 return true; |
0 | 184 } |
185 | |
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186 |
0 | 187 // Determine if 'fr' is a walkable interpreted frame. Returns false |
188 // if it is not. *method_p, and *bci_p are not set when false is | |
189 // returned. *method_p is non-NULL if frame was executing a Java | |
190 // method. *bci_p is != -1 if a valid BCI in the Java method could | |
191 // be found. | |
192 // Note: this method returns true when a valid Java method is found | |
193 // even if a valid BCI cannot be found. | |
194 | |
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195 static bool is_decipherable_interpreted_frame(JavaThread* thread, |
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196 frame* fr, |
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197 Method** method_p, |
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198 int* bci_p) { |
0 | 199 assert(fr->is_interpreted_frame(), "just checking"); |
200 | |
201 // top frame is an interpreted frame | |
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202 // check if it is walkable (i.e. valid Method* and valid bci) |
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203 |
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204 // Because we may be racing a gc thread the method and/or bci |
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205 // of a valid interpreter frame may look bad causing us to |
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206 // fail the is_interpreted_frame_valid test. If the thread |
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207 // is in any of the following states we are assured that the |
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208 // frame is in fact valid and we must have hit the race. |
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209 |
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210 JavaThreadState state = thread->thread_state(); |
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211 bool known_valid = (state == _thread_in_native || |
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212 state == _thread_in_vm || |
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213 state == _thread_blocked ); |
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214 |
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215 if (known_valid || fr->is_interpreted_frame_valid(thread)) { |
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216 |
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217 // The frame code should completely validate the frame so that |
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218 // references to Method* and bci are completely safe to access |
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219 // If they aren't the frame code should be fixed not this |
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220 // code. However since gc isn't locked out the values could be |
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221 // stale. This is a race we can never completely win since we can't |
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222 // lock out gc so do one last check after retrieving their values |
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223 // from the frame for additional safety |
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224 |
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225 Method* method = fr->interpreter_frame_method(); |
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226 |
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227 // We've at least found a method. |
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228 // NOTE: there is something to be said for the approach that |
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229 // if we don't find a valid bci then the method is not likely |
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230 // a valid method. Then again we may have caught an interpreter |
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231 // frame in the middle of construction and the bci field is |
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232 // not yet valid. |
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233 |
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234 *method_p = method; |
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235 if (!method->is_valid_method()) return false; |
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236 |
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237 intptr_t bcx = fr->interpreter_frame_bcx(); |
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238 |
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239 int bci = method->validate_bci_from_bcx(bcx); |
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240 |
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241 // note: bci is set to -1 if not a valid bci |
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242 *bci_p = bci; |
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243 return true; |
0 | 244 } |
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245 |
0 | 246 return false; |
247 } | |
248 | |
249 | |
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250 // Determine if 'fr' can be used to find an initial Java frame. |
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251 // Return false if it can not find a fully decipherable Java frame |
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252 // (in other words a frame that isn't safe to use in a vframe stream). |
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253 // Obviously if it can't even find a Java frame false will also be returned. |
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254 // |
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255 // If we find a Java frame decipherable or not then by definition we have |
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256 // identified a method and that will be returned to the caller via method_p. |
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257 // If we can determine a bci that is returned also. (Hmm is it possible |
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258 // to return a method and bci and still return false? ) |
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259 // |
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260 // The initial Java frame we find (if any) is return via initial_frame_p. |
0 | 261 // |
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262 |
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263 static bool find_initial_Java_frame(JavaThread* thread, |
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264 frame* fr, |
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265 frame* initial_frame_p, |
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266 Method** method_p, |
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267 int* bci_p) { |
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268 |
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269 // It is possible that for a frame containing an nmethod |
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270 // we can capture the method but no bci. If we get no |
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271 // bci the frame isn't walkable but the method is usable. |
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272 // Therefore we init the returned Method* to NULL so the |
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273 // caller can make the distinction. |
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274 |
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275 *method_p = NULL; |
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276 |
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277 // On the initial call to this method the frame we get may not be |
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278 // recognizable to us. This should only happen if we are in a JRT_LEAF |
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279 // or something called by a JRT_LEAF method. |
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280 |
0 | 281 |
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282 |
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283 frame candidate = *fr; |
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284 |
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285 // If the starting frame we were given has no codeBlob associated with |
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286 // it see if we can find such a frame because only frames with codeBlobs |
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287 // are possible Java frames. |
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288 |
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289 if (fr->cb() == NULL) { |
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290 |
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291 // See if we can find a useful frame |
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292 int loop_count; |
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293 int loop_max = MaxJavaStackTraceDepth * 2; |
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294 RegisterMap map(thread, false); |
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295 |
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296 for (loop_count = 0; loop_count < loop_max; loop_count++) { |
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297 if (!candidate.safe_for_sender(thread)) return false; |
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298 candidate = candidate.sender(&map); |
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299 if (candidate.cb() != NULL) break; |
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300 } |
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301 if (candidate.cb() == NULL) return false; |
0 | 302 } |
303 | |
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304 // We have a frame known to be in the codeCache |
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305 // We will hopefully be able to figure out something to do with it. |
0 | 306 int loop_count; |
307 int loop_max = MaxJavaStackTraceDepth * 2; | |
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308 RegisterMap map(thread, false); |
0 | 309 |
310 for (loop_count = 0; loop_count < loop_max; loop_count++) { | |
311 | |
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312 if (candidate.is_entry_frame()) { |
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313 // jcw is NULL if the java call wrapper couldn't be found |
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314 JavaCallWrapper *jcw = candidate.entry_frame_call_wrapper_if_safe(thread); |
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315 // If initial frame is frame from StubGenerator and there is no |
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316 // previous anchor, there are no java frames associated with a method |
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317 if (jcw == NULL || jcw->is_first_frame()) { |
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318 return false; |
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319 } |
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320 } |
0 | 321 |
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322 if (candidate.is_interpreted_frame()) { |
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323 if (is_decipherable_interpreted_frame(thread, &candidate, method_p, bci_p)) { |
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324 *initial_frame_p = candidate; |
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325 return true; |
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326 } |
0 | 327 |
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328 // Hopefully we got some data |
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329 return false; |
0 | 330 } |
331 | |
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332 if (candidate.cb()->is_nmethod()) { |
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333 |
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334 nmethod* nm = (nmethod*) candidate.cb(); |
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335 *method_p = nm->method(); |
0 | 336 |
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337 // If the frame isn't fully decipherable then the default |
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338 // value for the bci is a signal that we don't have a bci. |
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339 // If we have a decipherable frame this bci value will |
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340 // not be used. |
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341 |
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342 *bci_p = -1; |
0 | 343 |
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344 *initial_frame_p = candidate; |
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345 |
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346 // Native wrapper code is trivial to decode by vframeStream |
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347 |
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348 if (nm->is_native_method()) return true; |
0 | 349 |
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350 // If it isn't decipherable then we have found a pc that doesn't |
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351 // have a PCDesc that can get us a bci however we did find |
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352 // a method |
0 | 353 |
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354 if (!is_decipherable_compiled_frame(thread, &candidate, nm)) { |
0 | 355 return false; |
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356 } |
0 | 357 |
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358 // is_decipherable_compiled_frame may modify candidate's pc |
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359 *initial_frame_p = candidate; |
0 | 360 |
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361 assert(nm->pc_desc_at(candidate.pc()) != NULL, "if it's decipherable then pc must be valid"); |
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362 |
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363 return true; |
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364 } |
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365 |
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366 // Must be some stub frame that we don't care about |
0 | 367 |
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368 if (!candidate.safe_for_sender(thread)) return false; |
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369 candidate = candidate.sender(&map); |
0 | 370 |
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371 // If it isn't in the code cache something is wrong |
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372 // since once we find a frame in the code cache they |
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373 // all should be there. |
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374 |
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375 if (candidate.cb() == NULL) return false; |
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376 |
0 | 377 } |
378 | |
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379 return false; |
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380 |
0 | 381 } |
382 | |
383 static void forte_fill_call_trace_given_top(JavaThread* thd, | |
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384 ASGCT_CallTrace* trace, |
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385 int depth, |
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386 frame top_frame) { |
0 | 387 NoHandleMark nhm; |
388 | |
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389 frame initial_Java_frame; |
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390 Method* method; |
0 | 391 int bci; |
392 int count; | |
393 | |
394 count = 0; | |
395 assert(trace->frames != NULL, "trace->frames must be non-NULL"); | |
396 | |
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397 bool fully_decipherable = find_initial_Java_frame(thd, &top_frame, &initial_Java_frame, &method, &bci); |
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398 |
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399 // The frame might not be walkable but still recovered a method |
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400 // (e.g. an nmethod with no scope info for the pc) |
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401 |
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402 if (method == NULL) return; |
0 | 403 |
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404 if (!method->is_valid_method()) { |
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405 trace->num_frames = ticks_GC_active; // -2 |
0 | 406 return; |
407 } | |
408 | |
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409 // We got a Java frame however it isn't fully decipherable |
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410 // so it won't necessarily be safe to use it for the |
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411 // initial frame in the vframe stream. |
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412 |
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413 if (!fully_decipherable) { |
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414 // Take whatever method the top-frame decoder managed to scrape up. |
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415 // We look further at the top frame only if non-safepoint |
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416 // debugging information is available. |
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417 count++; |
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418 trace->num_frames = count; |
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419 trace->frames[0].method_id = method->find_jmethod_id_or_null(); |
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420 if (!method->is_native()) { |
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421 trace->frames[0].lineno = bci; |
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422 } else { |
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423 trace->frames[0].lineno = -3; |
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424 } |
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425 |
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426 if (!initial_Java_frame.safe_for_sender(thd)) return; |
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427 |
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428 RegisterMap map(thd, false); |
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429 initial_Java_frame = initial_Java_frame.sender(&map); |
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430 } |
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431 |
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432 vframeStreamForte st(thd, initial_Java_frame, false); |
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433 |
0 | 434 for (; !st.at_end() && count < depth; st.forte_next(), count++) { |
435 bci = st.bci(); | |
436 method = st.method(); | |
437 | |
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438 if (!method->is_valid_method()) { |
0 | 439 // we throw away everything we've gathered in this sample since |
440 // none of it is safe | |
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441 trace->num_frames = ticks_GC_active; // -2 |
0 | 442 return; |
443 } | |
444 | |
445 trace->frames[count].method_id = method->find_jmethod_id_or_null(); | |
446 if (!method->is_native()) { | |
447 trace->frames[count].lineno = bci; | |
448 } else { | |
449 trace->frames[count].lineno = -3; | |
450 } | |
451 } | |
452 trace->num_frames = count; | |
453 return; | |
454 } | |
455 | |
456 | |
457 // Forte Analyzer AsyncGetCallTrace() entry point. Currently supported | |
458 // on Linux X86, Solaris SPARC and Solaris X86. | |
459 // | |
460 // Async-safe version of GetCallTrace being called from a signal handler | |
461 // when a LWP gets interrupted by SIGPROF but the stack traces are filled | |
462 // with different content (see below). | |
463 // | |
464 // This function must only be called when JVM/TI | |
465 // CLASS_LOAD events have been enabled since agent startup. The enabled | |
466 // event will cause the jmethodIDs to be allocated at class load time. | |
467 // The jmethodIDs cannot be allocated in a signal handler because locks | |
468 // cannot be grabbed in a signal handler safely. | |
469 // | |
470 // void (*AsyncGetCallTrace)(ASGCT_CallTrace *trace, jint depth, void* ucontext) | |
471 // | |
472 // Called by the profiler to obtain the current method call stack trace for | |
473 // a given thread. The thread is identified by the env_id field in the | |
474 // ASGCT_CallTrace structure. The profiler agent should allocate a ASGCT_CallTrace | |
475 // structure with enough memory for the requested stack depth. The VM fills in | |
476 // the frames buffer and the num_frames field. | |
477 // | |
478 // Arguments: | |
479 // | |
480 // trace - trace data structure to be filled by the VM. | |
481 // depth - depth of the call stack trace. | |
482 // ucontext - ucontext_t of the LWP | |
483 // | |
484 // ASGCT_CallTrace: | |
485 // typedef struct { | |
486 // JNIEnv *env_id; | |
487 // jint num_frames; | |
488 // ASGCT_CallFrame *frames; | |
489 // } ASGCT_CallTrace; | |
490 // | |
491 // Fields: | |
492 // env_id - ID of thread which executed this trace. | |
493 // num_frames - number of frames in the trace. | |
494 // (< 0 indicates the frame is not walkable). | |
495 // frames - the ASGCT_CallFrames that make up this trace. Callee followed by callers. | |
496 // | |
497 // ASGCT_CallFrame: | |
498 // typedef struct { | |
499 // jint lineno; | |
500 // jmethodID method_id; | |
501 // } ASGCT_CallFrame; | |
502 // | |
503 // Fields: | |
504 // 1) For Java frame (interpreted and compiled), | |
505 // lineno - bci of the method being executed or -1 if bci is not available | |
506 // method_id - jmethodID of the method being executed | |
507 // 2) For native method | |
508 // lineno - (-3) | |
509 // method_id - jmethodID of the method being executed | |
510 | |
511 extern "C" { | |
2191 | 512 JNIEXPORT |
0 | 513 void AsyncGetCallTrace(ASGCT_CallTrace *trace, jint depth, void* ucontext) { |
514 JavaThread* thread; | |
515 | |
516 if (trace->env_id == NULL || | |
517 (thread = JavaThread::thread_from_jni_environment(trace->env_id)) == NULL || | |
518 thread->is_exiting()) { | |
519 | |
520 // bad env_id, thread has exited or thread is exiting | |
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521 trace->num_frames = ticks_thread_exit; // -8 |
0 | 522 return; |
523 } | |
524 | |
525 if (thread->in_deopt_handler()) { | |
526 // thread is in the deoptimization handler so return no frames | |
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527 trace->num_frames = ticks_deopt; // -9 |
0 | 528 return; |
529 } | |
530 | |
531 assert(JavaThread::current() == thread, | |
532 "AsyncGetCallTrace must be called by the current interrupted thread"); | |
533 | |
534 if (!JvmtiExport::should_post_class_load()) { | |
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535 trace->num_frames = ticks_no_class_load; // -1 |
0 | 536 return; |
537 } | |
538 | |
539 if (Universe::heap()->is_gc_active()) { | |
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540 trace->num_frames = ticks_GC_active; // -2 |
0 | 541 return; |
542 } | |
543 | |
544 switch (thread->thread_state()) { | |
545 case _thread_new: | |
546 case _thread_uninitialized: | |
547 case _thread_new_trans: | |
548 // We found the thread on the threads list above, but it is too | |
549 // young to be useful so return that there are no Java frames. | |
550 trace->num_frames = 0; | |
551 break; | |
552 case _thread_in_native: | |
553 case _thread_in_native_trans: | |
554 case _thread_blocked: | |
555 case _thread_blocked_trans: | |
556 case _thread_in_vm: | |
557 case _thread_in_vm_trans: | |
558 { | |
559 frame fr; | |
560 | |
561 // param isInJava == false - indicate we aren't in Java code | |
562 if (!thread->pd_get_top_frame_for_signal_handler(&fr, ucontext, false)) { | |
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563 trace->num_frames = ticks_unknown_not_Java; // -3 unknown frame |
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564 } else { |
0 | 565 if (!thread->has_last_Java_frame()) { |
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566 trace->num_frames = 0; // No Java frames |
0 | 567 } else { |
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568 trace->num_frames = ticks_not_walkable_not_Java; // -4 non walkable frame by default |
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569 forte_fill_call_trace_given_top(thread, trace, depth, fr); |
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570 |
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571 // This assert would seem to be valid but it is not. |
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572 // It would be valid if we weren't possibly racing a gc |
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573 // thread. A gc thread can make a valid interpreted frame |
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574 // look invalid. It's a small window but it does happen. |
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575 // The assert is left here commented out as a reminder. |
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576 // assert(trace->num_frames != ticks_not_walkable_not_Java, "should always be walkable"); |
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577 |
0 | 578 } |
579 } | |
580 } | |
581 break; | |
582 case _thread_in_Java: | |
583 case _thread_in_Java_trans: | |
584 { | |
585 frame fr; | |
586 | |
587 // param isInJava == true - indicate we are in Java code | |
588 if (!thread->pd_get_top_frame_for_signal_handler(&fr, ucontext, true)) { | |
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589 trace->num_frames = ticks_unknown_Java; // -5 unknown frame |
0 | 590 } else { |
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591 trace->num_frames = ticks_not_walkable_Java; // -6, non walkable frame by default |
0 | 592 forte_fill_call_trace_given_top(thread, trace, depth, fr); |
593 } | |
594 } | |
595 break; | |
596 default: | |
597 // Unknown thread state | |
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598 trace->num_frames = ticks_unknown_state; // -7 |
0 | 599 break; |
600 } | |
601 } | |
602 | |
603 | |
604 #ifndef _WINDOWS | |
605 // Support for the Forte(TM) Peformance Tools collector. | |
606 // | |
607 // The method prototype is derived from libcollector.h. For more | |
608 // information, please see the libcollect man page. | |
609 | |
610 // Method to let libcollector know about a dynamically loaded function. | |
611 // Because it is weakly bound, the calls become NOP's when the library | |
612 // isn't present. | |
3960 | 613 #ifdef __APPLE__ |
614 // XXXDARWIN: Link errors occur even when __attribute__((weak_import)) | |
615 // is added | |
616 #define collector_func_load(x0,x1,x2,x3,x4,x5,x6) (0) | |
617 #else | |
0 | 618 void collector_func_load(char* name, |
619 void* null_argument_1, | |
620 void* null_argument_2, | |
621 void *vaddr, | |
622 int size, | |
623 int zero_argument, | |
624 void* null_argument_3); | |
625 #pragma weak collector_func_load | |
626 #define collector_func_load(x0,x1,x2,x3,x4,x5,x6) \ | |
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627 ( collector_func_load ? collector_func_load(x0,x1,x2,x3,x4,x5,x6),(void)0 : (void)0 ) |
3960 | 628 #endif // __APPLE__ |
0 | 629 #endif // !_WINDOWS |
630 | |
631 } // end extern "C" | |
632 #endif // !IA64 | |
633 | |
634 void Forte::register_stub(const char* name, address start, address end) { | |
635 #if !defined(_WINDOWS) && !defined(IA64) | |
636 assert(pointer_delta(end, start, sizeof(jbyte)) < INT_MAX, | |
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637 "Code size exceeds maximum range"); |
0 | 638 |
639 collector_func_load((char*)name, NULL, NULL, start, | |
640 pointer_delta(end, start, sizeof(jbyte)), 0, NULL); | |
641 #endif // !_WINDOWS && !IA64 | |
642 } | |
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643 |
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644 #else // INCLUDE_JVMTI |
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645 extern "C" { |
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646 JNIEXPORT |
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647 void AsyncGetCallTrace(ASGCT_CallTrace *trace, jint depth, void* ucontext) { |
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648 trace->num_frames = ticks_no_class_load; // -1 |
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649 } |
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650 } |
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651 #endif // INCLUDE_JVMTI |