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7009268: guarantee(middle - slop > start) failed: need enough space to divide up

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Codebuffer can overflow on test with large number of calls

Reviewed-by: dholmes, collins
This commit is contained in:
Bob Vandette 2011-01-07 12:44:54 -05:00
parent dec384330b
commit c14e8eb4f2
2 changed files with 11 additions and 6 deletions
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15
hotspot/src/share/vm/c1/c1_Compilation.cpp
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@ -245,7 +245,7 @@ void Compilation::emit_code_epilog(LIR_Assembler* assembler) {
}
void Compilation::setup_code_buffer(CodeBuffer* code, int call_stub_estimate) {
bool Compilation::setup_code_buffer(CodeBuffer* code, int call_stub_estimate) {
// Preinitialize the consts section to some large size:
int locs_buffer_size = 20 * (relocInfo::length_limit + sizeof(relocInfo));
char* locs_buffer = NEW_RESOURCE_ARRAY(char, locs_buffer_size);
@ -253,15 +253,20 @@ void Compilation::setup_code_buffer(CodeBuffer* code, int call_stub_estimate) {
locs_buffer_size / sizeof(relocInfo));
code->initialize_consts_size(Compilation::desired_max_constant_size());
// Call stubs + two deopt handlers (regular and MH) + exception handler
code->initialize_stubs_size((call_stub_estimate * LIR_Assembler::call_stub_size) +
LIR_Assembler::exception_handler_size +
2 * LIR_Assembler::deopt_handler_size);
int stub_size = (call_stub_estimate * LIR_Assembler::call_stub_size) +
LIR_Assembler::exception_handler_size +
(2 * LIR_Assembler::deopt_handler_size);
if (stub_size >= code->insts_capacity()) return false;
code->initialize_stubs_size(stub_size);
return true;
}
int Compilation::emit_code_body() {
// emit code
setup_code_buffer(code(), allocator()->num_calls());
if (!setup_code_buffer(code(), allocator()->num_calls())) {
BAILOUT_("size requested greater than avail code buffer size", 0);
}
code()->initialize_oop_recorder(env()->oop_recorder());
_masm = new C1_MacroAssembler(code());

2
hotspot/src/share/vm/c1/c1_Compilation.hpp
View File

@ -192,7 +192,7 @@ class Compilation: public StackObj {
return desired_max_code_buffer_size() / 10;
}
static void setup_code_buffer(CodeBuffer* cb, int call_stub_estimate);
static bool setup_code_buffer(CodeBuffer* cb, int call_stub_estimate);
// timers
static void print_timers();