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7030610: runtime/6878713/Test6878713.sh fails Error. failed to clean up files after test

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7123945: runtime/6878713/Test6878713.sh require about 2G of native memory, swaps and times out

Add new diagnostic option -XX:MallocMaxTestWords=NNN and fix Test6878713.sh.

Reviewed-by: dcubed, coleenp, dholmes, iklam
This commit is contained in:
Ron Durbin 2013-03-19 11:33:11 -07:00
parent 3630c6a127
commit f4bcfd04ca
3 changed files with 157 additions and 17 deletions
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39
hotspot/src/share/vm/runtime/os.cpp
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -80,6 +80,8 @@ julong os::num_frees = 0; // # of calls to free
julong os::free_bytes = 0; // # of bytes freed
#endif
static juint cur_malloc_words = 0; // current size for MallocMaxTestWords
void os_init_globals() {
// Called from init_globals().
// See Threads::create_vm() in thread.cpp, and init.cpp.
@ -570,6 +572,26 @@ void verify_block(void* memblock) {
}
#endif
//
// This function supports testing of the malloc out of memory
// condition without really running the system out of memory.
//
static u_char* testMalloc(size_t alloc_size) {
if (MallocMaxTestWords > 0 &&
(cur_malloc_words + (alloc_size / BytesPerWord)) > MallocMaxTestWords) {
return NULL;
}
u_char* ptr = (u_char*)::malloc(alloc_size);
if (MallocMaxTestWords > 0 && (ptr != NULL)) {
Atomic::add(((jint) (alloc_size / BytesPerWord)),
(volatile jint *) &cur_malloc_words);
}
return ptr;
}
void* os::malloc(size_t size, MEMFLAGS memflags, address caller) {
NOT_PRODUCT(inc_stat_counter(&num_mallocs, 1));
NOT_PRODUCT(inc_stat_counter(&alloc_bytes, size));
@ -579,11 +601,22 @@ void* os::malloc(size_t size, MEMFLAGS memflags, address caller) {
// if NULL is returned the calling functions assume out of memory.
size = 1;
}
if (size > size + space_before + space_after) { // Check for rollover.
const size_t alloc_size = size + space_before + space_after;
if (size > alloc_size) { // Check for rollover.
return NULL;
}
NOT_PRODUCT(if (MallocVerifyInterval > 0) check_heap());
u_char* ptr = (u_char*)::malloc(size + space_before + space_after);
u_char* ptr;
if (MallocMaxTestWords > 0) {
ptr = testMalloc(alloc_size);
} else {
ptr = (u_char*)::malloc(alloc_size);
}
#ifdef ASSERT
if (ptr == NULL) return NULL;