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- /*
- * Copyright 2012 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
- #include "src/core/SkTLS.h"
- struct SkTLSRec {
- SkTLSRec* fNext;
- void* fData;
- SkTLS::CreateProc fCreateProc;
- SkTLS::DeleteProc fDeleteProc;
- ~SkTLSRec() {
- if (fDeleteProc) {
- fDeleteProc(fData);
- }
- // else we leak fData, or it will be managed by the caller
- }
- };
- void SkTLS::Destructor(void* ptr) {
- SkTLSRec* rec = (SkTLSRec*)ptr;
- do {
- SkTLSRec* next = rec->fNext;
- delete rec;
- rec = next;
- } while (rec);
- }
- void* SkTLS::Get(CreateProc createProc, DeleteProc deleteProc) {
- if (nullptr == createProc) {
- return nullptr;
- }
- void* ptr = SkTLS::PlatformGetSpecific(true);
- if (ptr) {
- const SkTLSRec* rec = (const SkTLSRec*)ptr;
- do {
- if (rec->fCreateProc == createProc) {
- SkASSERT(rec->fDeleteProc == deleteProc);
- return rec->fData;
- }
- } while ((rec = rec->fNext) != nullptr);
- // not found, so create a new one
- }
- // add a new head of our change
- SkTLSRec* rec = new SkTLSRec;
- rec->fNext = (SkTLSRec*)ptr;
- SkTLS::PlatformSetSpecific(rec);
- rec->fData = createProc();
- rec->fCreateProc = createProc;
- rec->fDeleteProc = deleteProc;
- return rec->fData;
- }
- void* SkTLS::Find(CreateProc createProc) {
- if (nullptr == createProc) {
- return nullptr;
- }
- void* ptr = SkTLS::PlatformGetSpecific(false);
- if (ptr) {
- const SkTLSRec* rec = (const SkTLSRec*)ptr;
- do {
- if (rec->fCreateProc == createProc) {
- return rec->fData;
- }
- } while ((rec = rec->fNext) != nullptr);
- }
- return nullptr;
- }
- void SkTLS::Delete(CreateProc createProc) {
- if (nullptr == createProc) {
- return;
- }
- void* ptr = SkTLS::PlatformGetSpecific(false);
- SkTLSRec* curr = (SkTLSRec*)ptr;
- SkTLSRec* prev = nullptr;
- while (curr) {
- SkTLSRec* next = curr->fNext;
- if (curr->fCreateProc == createProc) {
- if (prev) {
- prev->fNext = next;
- } else {
- // we have a new head of our chain
- SkTLS::PlatformSetSpecific(next);
- }
- delete curr;
- break;
- }
- prev = curr;
- curr = next;
- }
- }
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