src/share/vm/code/nmethod.cpp
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rev 4338 : imported patch JDK-8009026
@@ -500,10 +500,12 @@
// create nmethod
nmethod* nm = NULL;
{
MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
int native_nmethod_size = allocation_size(code_buffer, sizeof(nmethod));
+ guarantee(CodeCache::largest_free_block() > (CodeCacheMinimumFreeSpace + native_nmethod_size),
+ "insufficient space for native method");
CodeOffsets offsets;
offsets.set_value(CodeOffsets::Verified_Entry, vep_offset);
offsets.set_value(CodeOffsets::Frame_Complete, frame_complete);
nm = new (native_nmethod_size)
nmethod(method(), native_nmethod_size, compile_id, &offsets,
@@ -535,10 +537,12 @@
// create nmethod
nmethod* nm = NULL;
{
MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
int nmethod_size = allocation_size(code_buffer, sizeof(nmethod));
+ guarantee(CodeCache::largest_free_block() > (CodeCacheMinimumFreeSpace + nmethod_size),
+ "insufficient space for dtrace method");
CodeOffsets offsets;
offsets.set_value(CodeOffsets::Verified_Entry, vep_offset);
offsets.set_value(CodeOffsets::Dtrace_trap, trap_offset);
offsets.set_value(CodeOffsets::Frame_Complete, frame_complete);
@@ -585,10 +589,12 @@
+ adjust_pcs_size(debug_info->pcs_size())
+ round_to(dependencies->size_in_bytes() , oopSize)
+ round_to(handler_table->size_in_bytes(), oopSize)
+ round_to(nul_chk_table->size_in_bytes(), oopSize)
+ round_to(debug_info->data_size() , oopSize);
+ guarantee(CodeCache::largest_free_block() > (CodeCacheMinimumFreeSpace + nmethod_size),
+ "insufficient space for nmethod");
nm = new (nmethod_size)
nmethod(method(), nmethod_size, compile_id, entry_bci, offsets,
orig_pc_offset, debug_info, dependencies, code_buffer, frame_size,
oop_maps,
handler_table,
@@ -791,13 +797,13 @@
}
}
#endif // def HAVE_DTRACE_H
void* nmethod::operator new(size_t size, int nmethod_size) {
- // Always leave some room in the CodeCache for I2C/C2I adapters
- if (CodeCache::largest_free_block() < CodeCacheMinimumFreeSpace) return NULL;
- return CodeCache::allocate(nmethod_size);
+ void* alloc = CodeCache::allocate(nmethod_size);
+ guarantee(alloc != NULL, "CodeCache should have enough space");
+ return alloc;
}
nmethod::nmethod(
Method* method,