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7008325: CodeCache exhausted on sparc starting from hs20b04

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Remove clear_scratch_buffer_blob and let init_scratch_buffer_blob free and allocate a new blob if required.

Reviewed-by: twisti
This commit is contained in:
Vladimir Kozlov 2010-12-29 10:41:43 -08:00
parent 4286ac7947
commit 28050800c0
6 changed files with 39 additions and 26 deletions
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45
hotspot/src/share/vm/opto/compile.cpp
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@ -444,22 +444,32 @@ void Compile::print_compile_messages() {
}
//-----------------------init_scratch_buffer_blob------------------------------
// Construct a temporary BufferBlob and cache it for this compile.
void Compile::init_scratch_buffer_blob(int const_size) {
if (scratch_buffer_blob() != NULL) return;
// If there is already a scratch buffer blob allocated and the
// constant section is big enough, use it. Otherwise free the
// current and allocate a new one.
BufferBlob* blob = scratch_buffer_blob();
if ((blob != NULL) && (const_size <= _scratch_const_size)) {
// Use the current blob.
} else {
if (blob != NULL) {
BufferBlob::free(blob);
}
// Construct a temporary CodeBuffer to have it construct a BufferBlob
// Cache this BufferBlob for this compile.
ResourceMark rm;
_scratch_const_size = const_size;
int size = (MAX_inst_size + MAX_stubs_size + _scratch_const_size);
BufferBlob* blob = BufferBlob::create("Compile::scratch_buffer", size);
// Record the buffer blob for next time.
set_scratch_buffer_blob(blob);
// Have we run out of code space?
if (scratch_buffer_blob() == NULL) {
// Let CompilerBroker disable further compilations.
record_failure("Not enough space for scratch buffer in CodeCache");
return;
ResourceMark rm;
_scratch_const_size = const_size;
int size = (MAX_inst_size + MAX_stubs_size + _scratch_const_size);
blob = BufferBlob::create("Compile::scratch_buffer", size);
// Record the buffer blob for next time.
set_scratch_buffer_blob(blob);
// Have we run out of code space?
if (scratch_buffer_blob() == NULL) {
// Let CompilerBroker disable further compilations.
record_failure("Not enough space for scratch buffer in CodeCache");
return;
}
}
// Initialize the relocation buffers
@ -468,13 +478,6 @@ void Compile::init_scratch_buffer_blob(int const_size) {
}
void Compile::clear_scratch_buffer_blob() {
assert(scratch_buffer_blob(), "no BufferBlob set");
set_scratch_buffer_blob(NULL);
set_scratch_locs_memory(NULL);
}
//-----------------------scratch_emit_size-------------------------------------
// Helper function that computes size by emitting code
uint Compile::scratch_emit_size(const Node* n) {