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comparison: gfx/skia/trunk/src/core/SkTLS.cpp
gfx/skia/trunk/src/core/SkTLS.cpp
- branch
- TOR_BUG_9701
- changeset 11
- deefc01c0e14
equal
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| -1:000000000000 | 0:997ab5bcfac6 |
|---|---|
| 1 #include "SkTLS.h" | |
| 2 | |
| 3 // enable to help debug TLS storage | |
| 4 //#define SK_TRACE_TLS_LIFETIME | |
| 5 | |
| 6 | |
| 7 #ifdef SK_TRACE_TLS_LIFETIME | |
| 8 #include "SkThread.h" | |
| 9 static int32_t gTLSRecCount; | |
| 10 #endif | |
| 11 | |
| 12 struct SkTLSRec { | |
| 13 SkTLSRec* fNext; | |
| 14 void* fData; | |
| 15 SkTLS::CreateProc fCreateProc; | |
| 16 SkTLS::DeleteProc fDeleteProc; | |
| 17 | |
| 18 #ifdef SK_TRACE_TLS_LIFETIME | |
| 19 SkTLSRec() { | |
| 20 int n = sk_atomic_inc(&gTLSRecCount); | |
| 21 SkDebugf(" SkTLSRec[%d]\n", n); | |
| 22 } | |
| 23 #endif | |
| 24 | |
| 25 ~SkTLSRec() { | |
| 26 if (fDeleteProc) { | |
| 27 fDeleteProc(fData); | |
| 28 } | |
| 29 // else we leak fData, or it will be managed by the caller | |
| 30 | |
| 31 #ifdef SK_TRACE_TLS_LIFETIME | |
| 32 int n = sk_atomic_dec(&gTLSRecCount); | |
| 33 SkDebugf("~SkTLSRec[%d]\n", n - 1); | |
| 34 #endif | |
| 35 } | |
| 36 }; | |
| 37 | |
| 38 void SkTLS::Destructor(void* ptr) { | |
| 39 #ifdef SK_TRACE_TLS_LIFETIME | |
| 40 SkDebugf("SkTLS::Destructor(%p)\n", ptr); | |
| 41 #endif | |
| 42 | |
| 43 SkTLSRec* rec = (SkTLSRec*)ptr; | |
| 44 do { | |
| 45 SkTLSRec* next = rec->fNext; | |
| 46 SkDELETE(rec); | |
| 47 rec = next; | |
| 48 } while (NULL != rec); | |
| 49 } | |
| 50 | |
| 51 void* SkTLS::Get(CreateProc createProc, DeleteProc deleteProc) { | |
| 52 if (NULL == createProc) { | |
| 53 return NULL; | |
| 54 } | |
| 55 | |
| 56 void* ptr = SkTLS::PlatformGetSpecific(true); | |
| 57 | |
| 58 if (ptr) { | |
| 59 const SkTLSRec* rec = (const SkTLSRec*)ptr; | |
| 60 do { | |
| 61 if (rec->fCreateProc == createProc) { | |
| 62 SkASSERT(rec->fDeleteProc == deleteProc); | |
| 63 return rec->fData; | |
| 64 } | |
| 65 } while ((rec = rec->fNext) != NULL); | |
| 66 // not found, so create a new one | |
| 67 } | |
| 68 | |
| 69 // add a new head of our change | |
| 70 SkTLSRec* rec = new SkTLSRec; | |
| 71 rec->fNext = (SkTLSRec*)ptr; | |
| 72 | |
| 73 SkTLS::PlatformSetSpecific(rec); | |
| 74 | |
| 75 rec->fData = createProc(); | |
| 76 rec->fCreateProc = createProc; | |
| 77 rec->fDeleteProc = deleteProc; | |
| 78 return rec->fData; | |
| 79 } | |
| 80 | |
| 81 void* SkTLS::Find(CreateProc createProc) { | |
| 82 if (NULL == createProc) { | |
| 83 return NULL; | |
| 84 } | |
| 85 | |
| 86 void* ptr = SkTLS::PlatformGetSpecific(false); | |
| 87 | |
| 88 if (ptr) { | |
| 89 const SkTLSRec* rec = (const SkTLSRec*)ptr; | |
| 90 do { | |
| 91 if (rec->fCreateProc == createProc) { | |
| 92 return rec->fData; | |
| 93 } | |
| 94 } while ((rec = rec->fNext) != NULL); | |
| 95 } | |
| 96 return NULL; | |
| 97 } | |
| 98 | |
| 99 void SkTLS::Delete(CreateProc createProc) { | |
| 100 if (NULL == createProc) { | |
| 101 return; | |
| 102 } | |
| 103 | |
| 104 void* ptr = SkTLS::PlatformGetSpecific(false); | |
| 105 | |
| 106 SkTLSRec* curr = (SkTLSRec*)ptr; | |
| 107 SkTLSRec* prev = NULL; | |
| 108 while (curr) { | |
| 109 SkTLSRec* next = curr->fNext; | |
| 110 if (curr->fCreateProc == createProc) { | |
| 111 if (prev) { | |
| 112 prev->fNext = next; | |
| 113 } else { | |
| 114 // we have a new head of our chain | |
| 115 SkTLS::PlatformSetSpecific(next); | |
| 116 } | |
| 117 SkDELETE(curr); | |
| 118 break; | |
| 119 } | |
| 120 prev = curr; | |
| 121 curr = next; | |
| 122 } | |
| 123 } |
