| OLD | NEW |
| 1 | 1 |
| 2 /* | 2 /* |
| 3 * Copyright 2006 The Android Open Source Project | 3 * Copyright 2006 The Android Open Source Project |
| 4 * | 4 * |
| 5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
| 6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
| 7 */ | 7 */ |
| 8 | 8 |
| 9 | 9 |
| 10 #ifndef SkRefCnt_DEFINED | 10 #ifndef SkRefCnt_DEFINED |
| (...skipping 24 matching lines...) Expand all Loading... |
| 35 | 35 |
| 36 /** Destruct, asserting that the reference count is 1. | 36 /** Destruct, asserting that the reference count is 1. |
| 37 */ | 37 */ |
| 38 virtual ~SkRefCntBase() { | 38 virtual ~SkRefCntBase() { |
| 39 #ifdef SK_DEBUG | 39 #ifdef SK_DEBUG |
| 40 SkASSERTF(fRefCnt == 1, "fRefCnt was %d", fRefCnt); | 40 SkASSERTF(fRefCnt == 1, "fRefCnt was %d", fRefCnt); |
| 41 fRefCnt = 0; // illegal value, to catch us if we reuse after delete | 41 fRefCnt = 0; // illegal value, to catch us if we reuse after delete |
| 42 #endif | 42 #endif |
| 43 } | 43 } |
| 44 | 44 |
| 45 #ifdef SK_DEBUG | 45 //#ifdef SK_DEBUG |
| 46 /** Return the reference count. Use only for debugging. */ | 46 /** Return the reference count. Use only for debugging. */ |
| 47 int32_t getRefCnt() const { return fRefCnt; } | 47 int32_t getRefCnt() const { return fRefCnt; } |
| 48 #endif | 48 //#endif |
| 49 | 49 |
| 50 /** May return true if the caller is the only owner. | 50 /** May return true if the caller is the only owner. |
| 51 * Ensures that all previous owner's actions are complete. | 51 * Ensures that all previous owner's actions are complete. |
| 52 */ | 52 */ |
| 53 bool unique() const { | 53 bool unique() const { |
| 54 // We believe we're reading fRefCnt in a safe way here, so we stifle the
TSAN warning about | 54 // We believe we're reading fRefCnt in a safe way here, so we stifle the
TSAN warning about |
| 55 // an unproctected read. Generally, don't read fRefCnt, and don't stifl
e this warning. | 55 // an unproctected read. Generally, don't read fRefCnt, and don't stifl
e this warning. |
| 56 bool const unique = (1 == sk_acquire_load(&fRefCnt)); | 56 bool const unique = (1 == sk_acquire_load(&fRefCnt)); |
| 57 if (unique) { | 57 if (unique) { |
| 58 // Acquire barrier (L/SL), if not provided by load of fRefCnt. | 58 // Acquire barrier (L/SL), if not provided by load of fRefCnt. |
| (...skipping 207 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 266 void ref() const { sk_atomic_inc(&fRefCnt); } | 266 void ref() const { sk_atomic_inc(&fRefCnt); } |
| 267 void unref() const { | 267 void unref() const { |
| 268 int32_t prevValue = sk_atomic_dec(&fRefCnt); | 268 int32_t prevValue = sk_atomic_dec(&fRefCnt); |
| 269 SkASSERT(prevValue >= 1); | 269 SkASSERT(prevValue >= 1); |
| 270 if (1 == prevValue) { | 270 if (1 == prevValue) { |
| 271 SkDEBUGCODE(fRefCnt = 1;) // restore the 1 for our destructor's as
sert | 271 SkDEBUGCODE(fRefCnt = 1;) // restore the 1 for our destructor's as
sert |
| 272 SkDELETE((const Derived*)this); | 272 SkDELETE((const Derived*)this); |
| 273 } | 273 } |
| 274 } | 274 } |
| 275 void deref() const { this->unref(); } // Chrome prefers to call deref(). | 275 void deref() const { this->unref(); } // Chrome prefers to call deref(). |
| 276 int32_t getRefCnt() const { return fRefCnt; } |
| 276 | 277 |
| 277 private: | 278 private: |
| 278 mutable int32_t fRefCnt; | 279 mutable int32_t fRefCnt; |
| 279 }; | 280 }; |
| 280 | 281 |
| 281 #endif | 282 #endif |
| OLD | NEW |