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gfx/skia/trunk/src/core/SkTLS.cpp@deefc01c0e14 (annotated)

gfx/skia/trunk/src/core/SkTLS.cpp

Thu, 15 Jan 2015 21:03:48 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Thu, 15 Jan 2015 21:03:48 +0100

branch

TOR_BUG_9701

changeset 11

deefc01c0e14

permissions

-rwxr-xr-x

Integrate friendly tips from Tor colleagues to make (or not) 4.5 alpha 3;
This includes removal of overloaded (but unused) methods, and addition of
a overlooked call to DataStruct::SetData(nsISupports, uint32_t, bool.)

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