Mercurial > hg > graal-compiler
annotate src/share/vm/prims/forte.cpp @ 1468:e4cd5d2de7e1
Changes to sync with CRI changes.
author | Doug Simon <doug.simon@oracle.com> |
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date | Fri, 19 Nov 2010 00:26:51 +0100 |
parents | 547cbe6dacc5 |
children | cff162798819 |
rev | line source |
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0 | 1 /* |
196 | 2 * Copyright 2003-2008 Sun Microsystems, Inc. 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 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 # include "incls/_precompiled.incl" | |
26 # include "incls/_forte.cpp.incl" | |
27 | |
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28 // These name match the names reported by the forte quality kit |
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29 enum { |
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30 ticks_no_Java_frame = 0, |
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31 ticks_no_class_load = -1, |
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32 ticks_GC_active = -2, |
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33 ticks_unknown_not_Java = -3, |
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34 ticks_not_walkable_not_Java = -4, |
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35 ticks_unknown_Java = -5, |
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36 ticks_not_walkable_Java = -6, |
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37 ticks_unknown_state = -7, |
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38 ticks_thread_exit = -8, |
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39 ticks_deopt = -9, |
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40 ticks_safepoint = -10 |
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41 }; |
0 | 42 |
43 //------------------------------------------------------- | |
44 | |
45 // Native interfaces for use by Forte tools. | |
46 | |
47 | |
48 #ifndef IA64 | |
49 | |
50 class vframeStreamForte : public vframeStreamCommon { | |
51 public: | |
52 // constructor that starts with sender of frame fr (top_frame) | |
53 vframeStreamForte(JavaThread *jt, frame fr, bool stop_at_java_call_stub); | |
54 void forte_next(); | |
55 }; | |
56 | |
57 | |
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58 static bool is_decipherable_compiled_frame(JavaThread* thread, frame* fr, nmethod* nm); |
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59 static bool is_decipherable_interpreted_frame(JavaThread* thread, |
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60 frame* fr, |
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61 methodOop* method_p, |
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62 int* bci_p); |
0 | 63 |
64 | |
65 | |
66 | |
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67 vframeStreamForte::vframeStreamForte(JavaThread *jt, |
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68 frame fr, |
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69 bool stop_at_java_call_stub) : vframeStreamCommon(jt) { |
0 | 70 |
71 _stop_at_java_call_stub = stop_at_java_call_stub; | |
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72 _frame = fr; |
0 | 73 |
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74 // We must always have a valid frame to start filling |
0 | 75 |
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76 bool filled_in = fill_from_frame(); |
0 | 77 |
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78 assert(filled_in, "invariant"); |
0 | 79 |
80 } | |
81 | |
82 | |
83 // Solaris SPARC Compiler1 needs an additional check on the grandparent | |
84 // of the top_frame when the parent of the top_frame is interpreted and | |
85 // the grandparent is compiled. However, in this method we do not know | |
86 // the relationship of the current _frame relative to the top_frame so | |
87 // we implement a more broad sanity check. When the previous callee is | |
88 // interpreted and the current sender is compiled, we verify that the | |
89 // current sender is also walkable. If it is not walkable, then we mark | |
90 // the current vframeStream as at the end. | |
91 void vframeStreamForte::forte_next() { | |
92 // handle frames with inlining | |
93 if (_mode == compiled_mode && | |
94 vframeStreamCommon::fill_in_compiled_inlined_sender()) { | |
95 return; | |
96 } | |
97 | |
98 // handle general case | |
99 | |
100 int loop_count = 0; | |
101 int loop_max = MaxJavaStackTraceDepth * 2; | |
102 | |
103 | |
104 do { | |
105 | |
107
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106 loop_count++; |
0 | 107 |
107
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108 // By the time we get here we should never see unsafe but better |
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109 // safe then segv'd |
0 | 110 |
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111 if (loop_count > loop_max || !_frame.safe_for_sender(_thread)) { |
0 | 112 _mode = at_end_mode; |
113 return; | |
114 } | |
115 | |
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116 _frame = _frame.sender(&_reg_map); |
0 | 117 |
118 } while (!fill_from_frame()); | |
119 } | |
120 | |
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121 // Determine if 'fr' is a decipherable compiled frame. We are already |
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122 // assured that fr is for a java nmethod. |
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123 |
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124 static bool is_decipherable_compiled_frame(JavaThread* thread, frame* fr, nmethod* nm) { |
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125 assert(nm->is_java_method(), "invariant"); |
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126 |
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127 if (thread->has_last_Java_frame() && thread->last_Java_pc() == fr->pc()) { |
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128 // We're stopped at a call into the JVM so look for a PcDesc with |
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129 // the actual pc reported by the frame. |
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130 PcDesc* pc_desc = nm->pc_desc_at(fr->pc()); |
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131 |
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132 // Did we find a useful PcDesc? |
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133 if (pc_desc != NULL && |
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134 pc_desc->scope_decode_offset() != DebugInformationRecorder::serialized_null) { |
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135 return true; |
0 | 136 } |
137 } | |
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138 |
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139 // We're at some random pc in the nmethod so search for the PcDesc |
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140 // whose pc is greater than the current PC. It's done this way |
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141 // because the extra PcDescs that are recorded for improved debug |
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142 // info record the end of the region covered by the ScopeDesc |
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143 // instead of the beginning. |
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144 PcDesc* pc_desc = nm->pc_desc_near(fr->pc() + 1); |
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145 |
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146 // Now do we have a useful PcDesc? |
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147 if (pc_desc == NULL || |
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148 pc_desc->scope_decode_offset() == DebugInformationRecorder::serialized_null) { |
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149 // No debug information available for this pc |
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150 // vframeStream would explode if we try and walk the frames. |
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151 return false; |
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152 } |
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153 |
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154 // This PcDesc is useful however we must adjust the frame's pc |
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155 // so that the vframeStream lookups will use this same pc |
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156 fr->set_pc(pc_desc->real_pc(nm)); |
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157 return true; |
0 | 158 } |
159 | |
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160 |
0 | 161 // Determine if 'fr' is a walkable interpreted frame. Returns false |
162 // if it is not. *method_p, and *bci_p are not set when false is | |
163 // returned. *method_p is non-NULL if frame was executing a Java | |
164 // method. *bci_p is != -1 if a valid BCI in the Java method could | |
165 // be found. | |
166 // Note: this method returns true when a valid Java method is found | |
167 // even if a valid BCI cannot be found. | |
168 | |
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169 static bool is_decipherable_interpreted_frame(JavaThread* thread, |
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170 frame* fr, |
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171 methodOop* method_p, |
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172 int* bci_p) { |
0 | 173 assert(fr->is_interpreted_frame(), "just checking"); |
174 | |
175 // top frame is an interpreted frame | |
176 // check if it is walkable (i.e. valid methodOop and valid bci) | |
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177 |
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178 // Because we may be racing a gc thread the method and/or bci |
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179 // of a valid interpreter frame may look bad causing us to |
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180 // fail the is_interpreted_frame_valid test. If the thread |
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181 // is in any of the following states we are assured that the |
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182 // frame is in fact valid and we must have hit the race. |
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183 |
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184 JavaThreadState state = thread->thread_state(); |
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185 bool known_valid = (state == _thread_in_native || |
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186 state == _thread_in_vm || |
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187 state == _thread_blocked ); |
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188 |
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189 if (known_valid || fr->is_interpreted_frame_valid(thread)) { |
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190 |
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191 // The frame code should completely validate the frame so that |
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192 // references to methodOop and bci are completely safe to access |
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193 // If they aren't the frame code should be fixed not this |
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194 // code. However since gc isn't locked out the values could be |
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195 // stale. This is a race we can never completely win since we can't |
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196 // lock out gc so do one last check after retrieving their values |
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197 // from the frame for additional safety |
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198 |
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199 methodOop method = fr->interpreter_frame_method(); |
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200 |
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201 // We've at least found a method. |
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202 // NOTE: there is something to be said for the approach that |
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203 // if we don't find a valid bci then the method is not likely |
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204 // a valid method. Then again we may have caught an interpreter |
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205 // frame in the middle of construction and the bci field is |
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206 // not yet valid. |
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207 |
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208 *method_p = method; |
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209 |
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210 // See if gc may have invalidated method since we validated frame |
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211 |
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212 if (!Universe::heap()->is_valid_method(method)) return false; |
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213 |
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214 intptr_t bcx = fr->interpreter_frame_bcx(); |
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215 |
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216 int bci = method->validate_bci_from_bcx(bcx); |
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217 |
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218 // note: bci is set to -1 if not a valid bci |
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219 *bci_p = bci; |
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220 return true; |
0 | 221 } |
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222 |
0 | 223 return false; |
224 } | |
225 | |
226 | |
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227 // Determine if 'fr' can be used to find an initial Java frame. |
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228 // Return false if it can not find a fully decipherable Java frame |
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229 // (in other words a frame that isn't safe to use in a vframe stream). |
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230 // Obviously if it can't even find a Java frame false will also be returned. |
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231 // |
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232 // If we find a Java frame decipherable or not then by definition we have |
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233 // identified a method and that will be returned to the caller via method_p. |
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234 // If we can determine a bci that is returned also. (Hmm is it possible |
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235 // to return a method and bci and still return false? ) |
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236 // |
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237 // The initial Java frame we find (if any) is return via initial_frame_p. |
0 | 238 // |
107
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239 |
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240 static bool find_initial_Java_frame(JavaThread* thread, |
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241 frame* fr, |
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242 frame* initial_frame_p, |
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243 methodOop* method_p, |
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244 int* bci_p) { |
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245 |
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246 // It is possible that for a frame containing an nmethod |
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247 // we can capture the method but no bci. If we get no |
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248 // bci the frame isn't walkable but the method is usable. |
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249 // Therefore we init the returned methodOop to NULL so the |
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250 // caller can make the distinction. |
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251 |
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252 *method_p = NULL; |
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253 |
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254 // On the initial call to this method the frame we get may not be |
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255 // recognizable to us. This should only happen if we are in a JRT_LEAF |
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256 // or something called by a JRT_LEAF method. |
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257 |
0 | 258 |
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259 |
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260 frame candidate = *fr; |
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261 |
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262 // If the starting frame we were given has no codeBlob associated with |
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263 // it see if we can find such a frame because only frames with codeBlobs |
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264 // are possible Java frames. |
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265 |
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266 if (fr->cb() == NULL) { |
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267 |
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268 // See if we can find a useful frame |
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269 int loop_count; |
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270 int loop_max = MaxJavaStackTraceDepth * 2; |
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271 RegisterMap map(thread, false); |
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272 |
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273 for (loop_count = 0; loop_count < loop_max; loop_count++) { |
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274 if (!candidate.safe_for_sender(thread)) return false; |
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275 candidate = candidate.sender(&map); |
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276 if (candidate.cb() != NULL) break; |
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277 } |
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278 if (candidate.cb() == NULL) return false; |
0 | 279 } |
280 | |
107
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281 // We have a frame known to be in the codeCache |
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282 // We will hopefully be able to figure out something to do with it. |
0 | 283 int loop_count; |
284 int loop_max = MaxJavaStackTraceDepth * 2; | |
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285 RegisterMap map(thread, false); |
0 | 286 |
287 for (loop_count = 0; loop_count < loop_max; loop_count++) { | |
288 | |
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289 if (candidate.is_first_frame()) { |
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290 // If initial frame is frame from StubGenerator and there is no |
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291 // previous anchor, there are no java frames associated with a method |
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292 return false; |
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293 } |
0 | 294 |
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295 if (candidate.is_interpreted_frame()) { |
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296 if (is_decipherable_interpreted_frame(thread, &candidate, method_p, bci_p)) { |
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297 *initial_frame_p = candidate; |
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298 return true; |
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299 } |
0 | 300 |
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301 // Hopefully we got some data |
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302 return false; |
0 | 303 } |
304 | |
107
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305 if (candidate.cb()->is_nmethod()) { |
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306 |
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307 nmethod* nm = (nmethod*) candidate.cb(); |
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308 *method_p = nm->method(); |
0 | 309 |
107
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310 // If the frame isn't fully decipherable then the default |
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311 // value for the bci is a signal that we don't have a bci. |
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312 // If we have a decipherable frame this bci value will |
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313 // not be used. |
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314 |
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315 *bci_p = -1; |
0 | 316 |
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317 *initial_frame_p = candidate; |
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318 |
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319 // Native wrapper code is trivial to decode by vframeStream |
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320 |
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321 if (nm->is_native_method()) return true; |
0 | 322 |
107
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323 // If it isn't decipherable then we have found a pc that doesn't |
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324 // have a PCDesc that can get us a bci however we did find |
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325 // a method |
0 | 326 |
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327 if (!is_decipherable_compiled_frame(thread, &candidate, nm)) { |
0 | 328 return false; |
107
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329 } |
0 | 330 |
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331 // is_decipherable_compiled_frame may modify candidate's pc |
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332 *initial_frame_p = candidate; |
0 | 333 |
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334 assert(nm->pc_desc_at(candidate.pc()) != NULL, "if it's decipherable then pc must be valid"); |
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335 |
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336 return true; |
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337 } |
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338 |
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339 // Must be some stub frame that we don't care about |
0 | 340 |
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341 if (!candidate.safe_for_sender(thread)) return false; |
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342 candidate = candidate.sender(&map); |
0 | 343 |
107
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344 // If it isn't in the code cache something is wrong |
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345 // since once we find a frame in the code cache they |
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346 // all should be there. |
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347 |
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348 if (candidate.cb() == NULL) return false; |
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349 |
0 | 350 } |
351 | |
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352 return false; |
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353 |
0 | 354 } |
355 | |
356 | |
357 // call frame copied from old .h file and renamed | |
358 typedef struct { | |
359 jint lineno; // line number in the source file | |
360 jmethodID method_id; // method executed in this frame | |
361 } ASGCT_CallFrame; | |
362 | |
363 // call trace copied from old .h file and renamed | |
364 typedef struct { | |
365 JNIEnv *env_id; // Env where trace was recorded | |
366 jint num_frames; // number of frames in this trace | |
367 ASGCT_CallFrame *frames; // frames | |
368 } ASGCT_CallTrace; | |
369 | |
370 static void forte_fill_call_trace_given_top(JavaThread* thd, | |
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371 ASGCT_CallTrace* trace, |
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372 int depth, |
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373 frame top_frame) { |
0 | 374 NoHandleMark nhm; |
375 | |
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376 frame initial_Java_frame; |
0 | 377 methodOop method; |
378 int bci; | |
379 int count; | |
380 | |
381 count = 0; | |
382 assert(trace->frames != NULL, "trace->frames must be non-NULL"); | |
383 | |
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384 bool fully_decipherable = find_initial_Java_frame(thd, &top_frame, &initial_Java_frame, &method, &bci); |
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385 |
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386 // The frame might not be walkable but still recovered a method |
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387 // (e.g. an nmethod with no scope info for the pc |
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388 |
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389 if (method == NULL) return; |
0 | 390 |
391 CollectedHeap* ch = Universe::heap(); | |
392 | |
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393 // The method is not stored GC safe so see if GC became active |
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394 // after we entered AsyncGetCallTrace() and before we try to |
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395 // use the methodOop. |
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396 // Yes, there is still a window after this check and before |
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397 // we use methodOop below, but we can't lock out GC so that |
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398 // has to be an acceptable risk. |
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399 if (!ch->is_valid_method(method)) { |
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400 trace->num_frames = ticks_GC_active; // -2 |
0 | 401 return; |
402 } | |
403 | |
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404 // We got a Java frame however it isn't fully decipherable |
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405 // so it won't necessarily be safe to use it for the |
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406 // initial frame in the vframe stream. |
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407 |
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408 if (!fully_decipherable) { |
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409 // Take whatever method the top-frame decoder managed to scrape up. |
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410 // We look further at the top frame only if non-safepoint |
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411 // debugging information is available. |
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412 count++; |
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413 trace->num_frames = count; |
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414 trace->frames[0].method_id = method->find_jmethod_id_or_null(); |
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415 if (!method->is_native()) { |
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416 trace->frames[0].lineno = bci; |
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417 } else { |
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418 trace->frames[0].lineno = -3; |
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419 } |
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420 |
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421 if (!initial_Java_frame.safe_for_sender(thd)) return; |
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422 |
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423 RegisterMap map(thd, false); |
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424 initial_Java_frame = initial_Java_frame.sender(&map); |
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425 } |
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426 |
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427 vframeStreamForte st(thd, initial_Java_frame, false); |
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428 |
0 | 429 for (; !st.at_end() && count < depth; st.forte_next(), count++) { |
430 bci = st.bci(); | |
431 method = st.method(); | |
432 | |
433 // The method is not stored GC safe so see if GC became active | |
434 // after we entered AsyncGetCallTrace() and before we try to | |
435 // use the methodOop. | |
436 // Yes, there is still a window after this check and before | |
437 // we use methodOop below, but we can't lock out GC so that | |
438 // has to be an acceptable risk. | |
439 if (!ch->is_valid_method(method)) { | |
440 // we throw away everything we've gathered in this sample since | |
441 // none of it is safe | |
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442 trace->num_frames = ticks_GC_active; // -2 |
0 | 443 return; |
444 } | |
445 | |
446 trace->frames[count].method_id = method->find_jmethod_id_or_null(); | |
447 if (!method->is_native()) { | |
448 trace->frames[count].lineno = bci; | |
449 } else { | |
450 trace->frames[count].lineno = -3; | |
451 } | |
452 } | |
453 trace->num_frames = count; | |
454 return; | |
455 } | |
456 | |
457 | |
458 // Forte Analyzer AsyncGetCallTrace() entry point. Currently supported | |
459 // on Linux X86, Solaris SPARC and Solaris X86. | |
460 // | |
461 // Async-safe version of GetCallTrace being called from a signal handler | |
462 // when a LWP gets interrupted by SIGPROF but the stack traces are filled | |
463 // with different content (see below). | |
464 // | |
465 // This function must only be called when JVM/TI | |
466 // CLASS_LOAD events have been enabled since agent startup. The enabled | |
467 // event will cause the jmethodIDs to be allocated at class load time. | |
468 // The jmethodIDs cannot be allocated in a signal handler because locks | |
469 // cannot be grabbed in a signal handler safely. | |
470 // | |
471 // void (*AsyncGetCallTrace)(ASGCT_CallTrace *trace, jint depth, void* ucontext) | |
472 // | |
473 // Called by the profiler to obtain the current method call stack trace for | |
474 // a given thread. The thread is identified by the env_id field in the | |
475 // ASGCT_CallTrace structure. The profiler agent should allocate a ASGCT_CallTrace | |
476 // structure with enough memory for the requested stack depth. The VM fills in | |
477 // the frames buffer and the num_frames field. | |
478 // | |
479 // Arguments: | |
480 // | |
481 // trace - trace data structure to be filled by the VM. | |
482 // depth - depth of the call stack trace. | |
483 // ucontext - ucontext_t of the LWP | |
484 // | |
485 // ASGCT_CallTrace: | |
486 // typedef struct { | |
487 // JNIEnv *env_id; | |
488 // jint num_frames; | |
489 // ASGCT_CallFrame *frames; | |
490 // } ASGCT_CallTrace; | |
491 // | |
492 // Fields: | |
493 // env_id - ID of thread which executed this trace. | |
494 // num_frames - number of frames in the trace. | |
495 // (< 0 indicates the frame is not walkable). | |
496 // frames - the ASGCT_CallFrames that make up this trace. Callee followed by callers. | |
497 // | |
498 // ASGCT_CallFrame: | |
499 // typedef struct { | |
500 // jint lineno; | |
501 // jmethodID method_id; | |
502 // } ASGCT_CallFrame; | |
503 // | |
504 // Fields: | |
505 // 1) For Java frame (interpreted and compiled), | |
506 // lineno - bci of the method being executed or -1 if bci is not available | |
507 // method_id - jmethodID of the method being executed | |
508 // 2) For native method | |
509 // lineno - (-3) | |
510 // method_id - jmethodID of the method being executed | |
511 | |
512 extern "C" { | |
513 void AsyncGetCallTrace(ASGCT_CallTrace *trace, jint depth, void* ucontext) { | |
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514 |
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515 // This is if'd out because we no longer use thread suspension. |
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516 // However if someone wanted to backport this to a 5.0 jvm then this |
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517 // code would be important. |
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518 #if 0 |
0 | 519 if (SafepointSynchronize::is_synchronizing()) { |
520 // The safepoint mechanism is trying to synchronize all the threads. | |
521 // Since this can involve thread suspension, it is not safe for us | |
522 // to be here. We can reduce the deadlock risk window by quickly | |
523 // returning to the SIGPROF handler. However, it is still possible | |
524 // for VMThread to catch us here or in the SIGPROF handler. If we | |
525 // are suspended while holding a resource and another thread blocks | |
526 // on that resource in the SIGPROF handler, then we will have a | |
527 // three-thread deadlock (VMThread, this thread, the other thread). | |
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528 trace->num_frames = ticks_safepoint; // -10 |
0 | 529 return; |
530 } | |
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531 #endif |
0 | 532 |
533 JavaThread* thread; | |
534 | |
535 if (trace->env_id == NULL || | |
536 (thread = JavaThread::thread_from_jni_environment(trace->env_id)) == NULL || | |
537 thread->is_exiting()) { | |
538 | |
539 // bad env_id, thread has exited or thread is exiting | |
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540 trace->num_frames = ticks_thread_exit; // -8 |
0 | 541 return; |
542 } | |
543 | |
544 if (thread->in_deopt_handler()) { | |
545 // thread is in the deoptimization handler so return no frames | |
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546 trace->num_frames = ticks_deopt; // -9 |
0 | 547 return; |
548 } | |
549 | |
550 assert(JavaThread::current() == thread, | |
551 "AsyncGetCallTrace must be called by the current interrupted thread"); | |
552 | |
553 if (!JvmtiExport::should_post_class_load()) { | |
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554 trace->num_frames = ticks_no_class_load; // -1 |
0 | 555 return; |
556 } | |
557 | |
558 if (Universe::heap()->is_gc_active()) { | |
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559 trace->num_frames = ticks_GC_active; // -2 |
0 | 560 return; |
561 } | |
562 | |
563 switch (thread->thread_state()) { | |
564 case _thread_new: | |
565 case _thread_uninitialized: | |
566 case _thread_new_trans: | |
567 // We found the thread on the threads list above, but it is too | |
568 // young to be useful so return that there are no Java frames. | |
569 trace->num_frames = 0; | |
570 break; | |
571 case _thread_in_native: | |
572 case _thread_in_native_trans: | |
573 case _thread_blocked: | |
574 case _thread_blocked_trans: | |
575 case _thread_in_vm: | |
576 case _thread_in_vm_trans: | |
577 { | |
578 frame fr; | |
579 | |
580 // param isInJava == false - indicate we aren't in Java code | |
581 if (!thread->pd_get_top_frame_for_signal_handler(&fr, ucontext, false)) { | |
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582 trace->num_frames = ticks_unknown_not_Java; // -3 unknown frame |
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583 } else { |
0 | 584 if (!thread->has_last_Java_frame()) { |
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585 trace->num_frames = 0; // No Java frames |
0 | 586 } else { |
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587 trace->num_frames = ticks_not_walkable_not_Java; // -4 non walkable frame by default |
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588 forte_fill_call_trace_given_top(thread, trace, depth, fr); |
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589 |
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590 // This assert would seem to be valid but it is not. |
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591 // It would be valid if we weren't possibly racing a gc |
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592 // thread. A gc thread can make a valid interpreted frame |
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593 // look invalid. It's a small window but it does happen. |
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594 // The assert is left here commented out as a reminder. |
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595 // assert(trace->num_frames != ticks_not_walkable_not_Java, "should always be walkable"); |
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596 |
0 | 597 } |
598 } | |
599 } | |
600 break; | |
601 case _thread_in_Java: | |
602 case _thread_in_Java_trans: | |
603 { | |
604 frame fr; | |
605 | |
606 // param isInJava == true - indicate we are in Java code | |
607 if (!thread->pd_get_top_frame_for_signal_handler(&fr, ucontext, true)) { | |
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608 trace->num_frames = ticks_unknown_Java; // -5 unknown frame |
0 | 609 } else { |
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610 trace->num_frames = ticks_not_walkable_Java; // -6, non walkable frame by default |
0 | 611 forte_fill_call_trace_given_top(thread, trace, depth, fr); |
612 } | |
613 } | |
614 break; | |
615 default: | |
616 // Unknown thread state | |
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617 trace->num_frames = ticks_unknown_state; // -7 |
0 | 618 break; |
619 } | |
620 } | |
621 | |
622 | |
623 #ifndef _WINDOWS | |
624 // Support for the Forte(TM) Peformance Tools collector. | |
625 // | |
626 // The method prototype is derived from libcollector.h. For more | |
627 // information, please see the libcollect man page. | |
628 | |
629 // Method to let libcollector know about a dynamically loaded function. | |
630 // Because it is weakly bound, the calls become NOP's when the library | |
631 // isn't present. | |
632 void collector_func_load(char* name, | |
633 void* null_argument_1, | |
634 void* null_argument_2, | |
635 void *vaddr, | |
636 int size, | |
637 int zero_argument, | |
638 void* null_argument_3); | |
639 #pragma weak collector_func_load | |
640 #define collector_func_load(x0,x1,x2,x3,x4,x5,x6) \ | |
641 ( collector_func_load ? collector_func_load(x0,x1,x2,x3,x4,x5,x6),0 : 0 ) | |
642 #endif // !_WINDOWS | |
643 | |
644 } // end extern "C" | |
645 #endif // !IA64 | |
646 | |
647 void Forte::register_stub(const char* name, address start, address end) { | |
648 #if !defined(_WINDOWS) && !defined(IA64) | |
649 assert(pointer_delta(end, start, sizeof(jbyte)) < INT_MAX, | |
650 "Code size exceeds maximum range") | |
651 | |
652 collector_func_load((char*)name, NULL, NULL, start, | |
653 pointer_delta(end, start, sizeof(jbyte)), 0, NULL); | |
654 #endif // !_WINDOWS && !IA64 | |
655 } |