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comparison src/share/vm/code/nmethod.cpp @ 931:72088be4b386

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6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit Summary: use PcDesc to keep record of the reexecute bit instead of using DebugInfoStreams Reviewed-by: kvn, never, twisti
author cfang
date Thu, 20 Aug 2009 12:42:57 -0700
parents 98cb887364d3
children b1606b3c0a8a 148e5441d916
comparison
equal deleted inserted replaced
930:357d4e2eb4dd 931:72088be4b386
1 /* 1 /*
2 * Copyright 1997-2008 Sun Microsystems, Inc. All Rights Reserved. 2 * Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 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 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
964 964
965 ScopeDesc* nmethod::scope_desc_at(address pc) { 965 ScopeDesc* nmethod::scope_desc_at(address pc) {
966 PcDesc* pd = pc_desc_at(pc); 966 PcDesc* pd = pc_desc_at(pc);
967 guarantee(pd != NULL, "scope must be present"); 967 guarantee(pd != NULL, "scope must be present");
968 return new ScopeDesc(this, pd->scope_decode_offset(), 968 return new ScopeDesc(this, pd->scope_decode_offset(),
969 pd->obj_decode_offset()); 969 pd->obj_decode_offset(), pd->should_reexecute());
970 } 970 }
971 971
972 972
973 void nmethod::clear_inline_caches() { 973 void nmethod::clear_inline_caches() {
974 assert(SafepointSynchronize::is_at_safepoint(), "cleaning of IC's only allowed at safepoint"); 974 assert(SafepointSynchronize::is_at_safepoint(), "cleaning of IC's only allowed at safepoint");
1930 ic = CompiledIC_at(call_site); 1930 ic = CompiledIC_at(call_site);
1931 } 1931 }
1932 PcDesc* pd = pc_desc_at(ic->end_of_call()); 1932 PcDesc* pd = pc_desc_at(ic->end_of_call());
1933 assert(pd != NULL, "PcDesc must exist"); 1933 assert(pd != NULL, "PcDesc must exist");
1934 for (ScopeDesc* sd = new ScopeDesc(this, pd->scope_decode_offset(), 1934 for (ScopeDesc* sd = new ScopeDesc(this, pd->scope_decode_offset(),
1935 pd->obj_decode_offset()); 1935 pd->obj_decode_offset(), pd->should_reexecute());
1936 !sd->is_top(); sd = sd->sender()) { 1936 !sd->is_top(); sd = sd->sender()) {
1937 sd->verify(); 1937 sd->verify();
1938 } 1938 }
1939 } 1939 }
1940 1940
2179 // Return a the last scope in (begin..end] 2179 // Return a the last scope in (begin..end]
2180 ScopeDesc* nmethod::scope_desc_in(address begin, address end) { 2180 ScopeDesc* nmethod::scope_desc_in(address begin, address end) {
2181 PcDesc* p = pc_desc_near(begin+1); 2181 PcDesc* p = pc_desc_near(begin+1);
2182 if (p != NULL && p->real_pc(this) <= end) { 2182 if (p != NULL && p->real_pc(this) <= end) {
2183 return new ScopeDesc(this, p->scope_decode_offset(), 2183 return new ScopeDesc(this, p->scope_decode_offset(),
2184 p->obj_decode_offset()); 2184 p->obj_decode_offset(), p->should_reexecute());
2185 } 2185 }
2186 return NULL; 2186 return NULL;
2187 } 2187 }
2188 2188
2189 void nmethod::print_code_comment_on(outputStream* st, int column, u_char* begin, u_char* end) { 2189 void nmethod::print_code_comment_on(outputStream* st, int column, u_char* begin, u_char* end) {