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30
31 #include "config.h"
32 #include "wtf/FastMalloc.h"
33
34 #include "wtf/PartitionAlloc.h"
35 #include "wtf/SpinLock.h"
36 #include <string.h>
37
38 namespace WTF {
39
40 static PartitionAllocatorGeneric gPartition;
41 static int gLock = 0;
42 static bool gInitialized = false;
43
fastZeroedMalloc(size_t n)44 void* fastZeroedMalloc(size_t n)
45 {
46 void* result = fastMalloc(n);
47 memset(result, 0, n);
48 return result;
49 }
50
fastStrDup(const char * src)51 char* fastStrDup(const char* src)
52 {
53 size_t len = strlen(src) + 1;
54 char* dup = static_cast<char*>(fastMalloc(len));
55 memcpy(dup, src, len);
56 return dup;
57 }
58
fastMallocShutdown()59 void fastMallocShutdown()
60 {
61 gPartition.shutdown();
62 }
63
fastMalloc(size_t n)64 void* fastMalloc(size_t n)
65 {
66 if (UNLIKELY(!gInitialized)) {
67 spinLockLock(&gLock);
68 if (!gInitialized) {
69 gInitialized = true;
70 gPartition.init();
71 }
72 spinLockUnlock(&gLock);
73 }
74 return partitionAllocGeneric(gPartition.root(), n);
75 }
76
fastFree(void * p)77 void fastFree(void* p)
78 {
79 partitionFreeGeneric(gPartition.root(), p);
80 }
81
fastRealloc(void * p,size_t n)82 void* fastRealloc(void* p, size_t n)
83 {
84 return partitionReallocGeneric(gPartition.root(), p, n);
85 }
86
87 } // namespace WTF
88