Mercurial > hg > graal-compiler
diff src/share/vm/code/codeCache.cpp @ 14704:b51e29501f30
Merged with jdk9/dev/hotspot changeset 9486a41de3b7
author | twisti |
---|---|
date | Tue, 18 Mar 2014 20:19:10 -0700 |
parents | d8041d695d19 480b0109db65 |
children | 92aa6797d639 |
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--- a/src/share/vm/code/codeCache.cpp Thu Mar 20 22:30:26 2014 +0100 +++ b/src/share/vm/code/codeCache.cpp Tue Mar 18 20:19:10 2014 -0700 @@ -198,14 +198,12 @@ } maxCodeCacheUsed = MAX2(maxCodeCacheUsed, ((address)_heap->high_boundary() - (address)_heap->low_boundary()) - unallocated_capacity()); - verify_if_often(); print_trace("allocation", cb, size); return cb; } void CodeCache::free(CodeBlob* cb) { assert_locked_or_safepoint(CodeCache_lock); - verify_if_often(); print_trace("free", cb); if (cb->is_nmethod()) { @@ -221,7 +219,6 @@ _heap->deallocate(cb); - verify_if_often(); assert(_number_of_blobs >= 0, "sanity check"); } @@ -244,12 +241,6 @@ } -void CodeCache::flush() { - assert_locked_or_safepoint(CodeCache_lock); - Unimplemented(); -} - - // Iteration over CodeBlobs #define FOR_ALL_BLOBS(var) for (CodeBlob *var = first() ; var != NULL; var = next(var) ) @@ -269,7 +260,7 @@ CodeBlob* CodeCache::find_blob(void* start) { CodeBlob* result = find_blob_unsafe(start); if (result == NULL) return NULL; - // We could potientially look up non_entrant methods + // We could potentially look up non_entrant methods guarantee(!result->is_zombie() || result->is_locked_by_vm() || is_error_reported(), "unsafe access to zombie method"); return result; } @@ -741,17 +732,26 @@ } } +void CodeCache::print_memory_overhead() { + size_t wasted_bytes = 0; + CodeBlob *cb; + for (cb = first(); cb != NULL; cb = next(cb)) { + HeapBlock* heap_block = ((HeapBlock*)cb) - 1; + wasted_bytes += heap_block->length() * CodeCacheSegmentSize - cb->size(); + } + // Print bytes that are allocated in the freelist + ttyLocker ttl; + tty->print_cr("Number of elements in freelist: %d", freelist_length()); + tty->print_cr("Allocated in freelist: %dkB", bytes_allocated_in_freelist()/K); + tty->print_cr("Unused bytes in CodeBlobs: %dkB", (int)(wasted_bytes/K)); + tty->print_cr("Segment map size: %dkB", allocated_segments()/K); // 1 byte per segment +} + //------------------------------------------------------------------------------------------------ // Non-product version #ifndef PRODUCT -void CodeCache::verify_if_often() { - if (VerifyCodeCacheOften) { - _heap->verify(); - } -} - void CodeCache::print_trace(const char* event, CodeBlob* cb, int size) { if (PrintCodeCache2) { // Need to add a new flag ResourceMark rm; @@ -774,7 +774,7 @@ int nmethodUnloaded = 0; int nmethodJava = 0; int nmethodNative = 0; - int maxCodeSize = 0; + int max_nm_size = 0; ResourceMark rm; CodeBlob *cb; @@ -798,13 +798,11 @@ if(nm->is_not_entrant()) { nmethodNotEntrant++; } if(nm->is_zombie()) { nmethodZombie++; } if(nm->is_unloaded()) { nmethodUnloaded++; } - if(nm->is_native_method()) { nmethodNative++; } + if(nm->method() != NULL && nm->is_native_method()) { nmethodNative++; } if(nm->method() != NULL && nm->is_java_method()) { nmethodJava++; - if (nm->insts_size() > maxCodeSize) { - maxCodeSize = nm->insts_size(); - } + max_nm_size = MAX2(max_nm_size, nm->size()); } } else if (cb->is_runtime_stub()) { runtimeStubCount++; @@ -820,18 +818,19 @@ } int bucketSize = 512; - int bucketLimit = maxCodeSize / bucketSize + 1; + int bucketLimit = max_nm_size / bucketSize + 1; int *buckets = NEW_C_HEAP_ARRAY(int, bucketLimit, mtCode); - memset(buckets,0,sizeof(int) * bucketLimit); + memset(buckets, 0, sizeof(int) * bucketLimit); for (cb = first(); cb != NULL; cb = next(cb)) { if (cb->is_nmethod()) { nmethod* nm = (nmethod*)cb; if(nm->is_java_method()) { - buckets[nm->insts_size() / bucketSize]++; - } + buckets[nm->size() / bucketSize]++; + } } } + tty->print_cr("Code Cache Entries (total of %d)",total); tty->print_cr("-------------------------------------------------"); tty->print_cr("nmethods: %d",nmethodCount); @@ -858,6 +857,7 @@ } FREE_C_HEAP_ARRAY(int, buckets, mtCode); + print_memory_overhead(); } #endif // !PRODUCT