The Tor Browser: gfx/skia/trunk/src/views/SkEvent.cpp@129ffea94266 (annotated)

gfx/skia/trunk/src/views/SkEvent.cpp@129ffea94266 (annotated)

gfx/skia/trunk/src/views/SkEvent.cpp

Sat, 03 Jan 2015 20:18:00 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Sat, 03 Jan 2015 20:18:00 +0100
branch: TOR_BUG_3246
changeset 7: 129ffea94266
permissions: -rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "SkEvent.h"
 void SkEvent::initialize(const char* type, size_t typeLen,
                          SkEventSinkID targetID) {
     fType = NULL;
     setType(type, typeLen);
     f32 = 0;
     fTargetID = targetID;
     fTargetProc = NULL;
 #ifdef SK_DEBUG
     fTime = 0;
     fNextEvent = NULL;
 #endif
 }
 SkEvent::SkEvent()
 {
     initialize("", 0, 0);
 }
 SkEvent::SkEvent(const SkEvent& src)
 {
     *this = src;
     if (((size_t) fType & 1) == 0)
         setType(src.fType);
 }
 SkEvent::SkEvent(const SkString& type, SkEventSinkID targetID)
 {
     initialize(type.c_str(), type.size(), targetID);
 }
 SkEvent::SkEvent(const char type[], SkEventSinkID targetID)
 {
     SkASSERT(type);
     initialize(type, strlen(type), targetID);
 }
 SkEvent::~SkEvent()
 {
     if (((size_t) fType & 1) == 0)
         sk_free((void*) fType);
 }
 static size_t makeCharArray(char* buffer, size_t compact)
 {
     size_t bits = (size_t) compact >> 1;
     memcpy(buffer, &bits, sizeof(compact));
     buffer[sizeof(compact)] = 0;
     return strlen(buffer);
 }
 void SkEvent::getType(SkString* str) const
 {
     if (str)
     {
         if ((size_t) fType & 1) // not a pointer
         {
             char chars[sizeof(size_t) + 1];
             size_t len = makeCharArray(chars, (size_t) fType);
             str->set(chars, len);
         }
         else
             str->set(fType);
     }
 }
 bool SkEvent::isType(const SkString& str) const
 {
     return this->isType(str.c_str(), str.size());
 }
 bool SkEvent::isType(const char type[], size_t typeLen) const
 {
     if (typeLen == 0)
         typeLen = strlen(type);
     if ((size_t) fType & 1) {   // not a pointer
         char chars[sizeof(size_t) + 1];
         size_t len = makeCharArray(chars, (size_t) fType);
         return len == typeLen && strncmp(chars, type, typeLen) == 0;
     }
     return strncmp(fType, type, typeLen) == 0 && fType[typeLen] == 0;
 }
 void SkEvent::setType(const char type[], size_t typeLen)
 {
     if (typeLen == 0)
         typeLen = strlen(type);
     if (typeLen <= sizeof(fType)) {
         size_t slot = 0;
         memcpy(&slot, type, typeLen);
         if (slot << 1 >> 1 != slot)
             goto useCharStar;
         slot <<= 1;
         slot |= 1;
         fType = (char*) slot;
     } else {
 useCharStar:
         fType = (char*) sk_malloc_throw(typeLen + 1);
         SkASSERT(((size_t) fType & 1) == 0);
         memcpy(fType, type, typeLen);
         fType[typeLen] = 0;
     }
 }
 void SkEvent::setType(const SkString& type)
 {
     setType(type.c_str());
 }
 ////////////////////////////////////////////////////////////////////////////
 #include "SkParse.h"
 void SkEvent::inflate(const SkDOM& dom, const SkDOM::Node* node)
 {
     const char* name = dom.findAttr(node, "type");
     if (name)
         this->setType(name);
     const char* value;
     if ((value = dom.findAttr(node, "fast32")) != NULL)
     {
         int32_t n;
         if (SkParse::FindS32(value, &n))
             this->setFast32(n);
     }
     for (node = dom.getFirstChild(node); node; node = dom.getNextSibling(node))
     {
         if (strcmp(dom.getName(node), "data"))
         {
             SkDEBUGCODE(SkDebugf("SkEvent::inflate unrecognized subelement <%s>\n", dom.getName(node));)
             continue;
         }
         name = dom.findAttr(node, "name");
         if (name == NULL)
         {
             SkDEBUGCODE(SkDebugf("SkEvent::inflate missing required \"name\" attribute in <data> subelement\n");)
             continue;
         }
         if ((value = dom.findAttr(node, "s32")) != NULL)
         {
             int32_t n;
             if (SkParse::FindS32(value, &n))
                 this->setS32(name, n);
         }
         else if ((value = dom.findAttr(node, "scalar")) != NULL)
         {
             SkScalar x;
             if (SkParse::FindScalar(value, &x))
                 this->setScalar(name, x);
         }
         else if ((value = dom.findAttr(node, "string")) != NULL)
             this->setString(name, value);
 #ifdef SK_DEBUG
         else
         {
             SkDebugf("SkEvent::inflate <data name=\"%s\"> subelement missing required type attribute [S32 | scalar | string]\n", name);
         }
 #endif
     }
 }
 #ifdef SK_DEBUG
     #ifndef SkScalarToFloat
         #define SkScalarToFloat(x)  ((x) / 65536.f)
     #endif
     void SkEvent::dump(const char title[])
     {
         if (title)
             SkDebugf("%s ", title);
         SkString    etype;
         this->getType(&etype);
         SkDebugf("event<%s> fast32=%d", etype.c_str(), this->getFast32());
         const SkMetaData&   md = this->getMetaData();
         SkMetaData::Iter    iter(md);
         SkMetaData::Type    mtype;
         int                 count;
         const char*         name;
         while ((name = iter.next(&mtype, &count)) != NULL)
         {
             SkASSERT(count > 0);
             SkDebugf(" <%s>=", name);
             switch (mtype) {
             case SkMetaData::kS32_Type:     // vector version???
                 {
                     int32_t value;
                     md.findS32(name, &value);
                     SkDebugf("%d ", value);
                 }
                 break;
             case SkMetaData::kScalar_Type:
                 {
                     const SkScalar* values = md.findScalars(name, &count, NULL);
                     SkDebugf("%f", SkScalarToFloat(values[0]));
                     for (int i = 1; i < count; i++)
                         SkDebugf(", %f", SkScalarToFloat(values[i]));
                     SkDebugf(" ");
                 }
                 break;
             case SkMetaData::kString_Type:
                 {
                     const char* value = md.findString(name);
                     SkASSERT(value);
                     SkDebugf("<%s> ", value);
                 }
                 break;
             case SkMetaData::kPtr_Type:     // vector version???
                 {
                     void*   value;
                     md.findPtr(name, &value);
                     SkDebugf("%p ", value);
                 }
                 break;
             case SkMetaData::kBool_Type:    // vector version???
                 {
                     bool    value;
                     md.findBool(name, &value);
                     SkDebugf("%s ", value ? "true" : "false");
                 }
                 break;
             default:
                 SkDEBUGFAIL("unknown metadata type returned from iterator");
                 break;
             }
         }
         SkDebugf("\n");
     }
 #endif
 ///////////////////////////////////////////////////////////////////////////////////////
 #ifdef SK_DEBUG
 // #define SK_TRACE_EVENTSx
 #endif
 #ifdef SK_TRACE_EVENTS
     static void event_log(const char s[])
     {
         SkDEBUGF(("%s\n", s));
     }
     #define EVENT_LOG(s)        event_log(s)
     #define EVENT_LOGN(s, n)    do { SkString str(s); str.append(" "); str.appendS32(n); event_log(str.c_str()); } while (0)
 #else
     #define EVENT_LOG(s)
     #define EVENT_LOGN(s, n)
 #endif
 #include "SkThread.h"
 #include "SkTime.h"
 class SkEvent_Globals {
 public:
     SkEvent_Globals() {
         fEventQHead = NULL;
         fEventQTail = NULL;
         fDelayQHead = NULL;
         SkDEBUGCODE(fEventCounter = 0;)
     }
     SkMutex     fEventMutex;
     SkEvent*    fEventQHead, *fEventQTail;
     SkEvent*    fDelayQHead;
     SkDEBUGCODE(int fEventCounter;)
 };
 static SkEvent_Globals& getGlobals() {
     // leak this, so we don't incure any shutdown perf hit
     static SkEvent_Globals* gGlobals = new SkEvent_Globals;
     return *gGlobals;
 }
 ///////////////////////////////////////////////////////////////////////////////
 void SkEvent::postDelay(SkMSec delay) {
     if (!fTargetID && !fTargetProc) {
         delete this;
         return;
     }
     if (delay) {
         this->postTime(SkTime::GetMSecs() + delay);
         return;
     }
     SkEvent_Globals& globals = getGlobals();
     globals.fEventMutex.acquire();
     bool wasEmpty = SkEvent::Enqueue(this);
     globals.fEventMutex.release();
     // call outside of us holding the mutex
     if (wasEmpty) {
         SkEvent::SignalNonEmptyQueue();
     }
 }
 void SkEvent::postTime(SkMSec time) {
     if (!fTargetID && !fTargetProc) {
         delete this;
         return;
     }
     SkEvent_Globals& globals = getGlobals();
     globals.fEventMutex.acquire();
     SkMSec queueDelay = SkEvent::EnqueueTime(this, time);
     globals.fEventMutex.release();
     // call outside of us holding the mutex
     if ((int32_t)queueDelay != ~0) {
         SkEvent::SignalQueueTimer(queueDelay);
     }
 }
 bool SkEvent::Enqueue(SkEvent* evt) {
     SkEvent_Globals& globals = getGlobals();
     //  gEventMutex acquired by caller
     SkASSERT(evt);
     bool wasEmpty = globals.fEventQHead == NULL;
     if (globals.fEventQTail)
         globals.fEventQTail->fNextEvent = evt;
     globals.fEventQTail = evt;
     if (globals.fEventQHead == NULL)
         globals.fEventQHead = evt;
     evt->fNextEvent = NULL;
     SkDEBUGCODE(++globals.fEventCounter);
     return wasEmpty;
 }
 SkEvent* SkEvent::Dequeue() {
     SkEvent_Globals& globals = getGlobals();
     globals.fEventMutex.acquire();
     SkEvent* evt = globals.fEventQHead;
     if (evt) {
         SkDEBUGCODE(--globals.fEventCounter);
         globals.fEventQHead = evt->fNextEvent;
         if (globals.fEventQHead == NULL) {
             globals.fEventQTail = NULL;
         }
     }
     globals.fEventMutex.release();
     return evt;
 }
 bool SkEvent::QHasEvents() {
     SkEvent_Globals& globals = getGlobals();
     // this is not thread accurate, need a semaphore for that
     return globals.fEventQHead != NULL;
 }
 #ifdef SK_TRACE_EVENTS
     static int gDelayDepth;
 #endif
 SkMSec SkEvent::EnqueueTime(SkEvent* evt, SkMSec time) {
     SkEvent_Globals& globals = getGlobals();
     //  gEventMutex acquired by caller
     SkEvent* curr = globals.fDelayQHead;
     SkEvent* prev = NULL;
     while (curr) {
         if (SkMSec_LT(time, curr->fTime)) {
             break;
         }
         prev = curr;
         curr = curr->fNextEvent;
     }
     evt->fTime = time;
     evt->fNextEvent = curr;
     if (prev == NULL) {
         globals.fDelayQHead = evt;
     } else {
         prev->fNextEvent = evt;
     }
     SkMSec delay = globals.fDelayQHead->fTime - SkTime::GetMSecs();
     if ((int32_t)delay <= 0) {
         delay = 1;
     }
     return delay;
 }
 ///////////////////////////////////////////////////////////////////////////////
 #include "SkEventSink.h"
 bool SkEvent::ProcessEvent() {
     SkEvent*                evt = SkEvent::Dequeue();
     SkAutoTDelete<SkEvent>  autoDelete(evt);
     bool                    again = false;
     EVENT_LOGN("ProcessEvent", (int32_t)evt);
     if (evt) {
         (void)SkEventSink::DoEvent(*evt);
         again = SkEvent::QHasEvents();
     }
     return again;
 }
 void SkEvent::ServiceQueueTimer()
 {
     SkEvent_Globals& globals = getGlobals();
     globals.fEventMutex.acquire();
     bool        wasEmpty = false;
     SkMSec      now = SkTime::GetMSecs();
     SkEvent*    evt = globals.fDelayQHead;
     while (evt)
     {
         if (SkMSec_LT(now, evt->fTime))
             break;
 #ifdef SK_TRACE_EVENTS
         --gDelayDepth;
         SkDebugf("dequeue-delay %s (%d)", evt->getType(), gDelayDepth);
         const char* idStr = evt->findString("id");
         if (idStr)
             SkDebugf(" (%s)", idStr);
         SkDebugf("\n");
 #endif
         SkEvent* next = evt->fNextEvent;
         if (SkEvent::Enqueue(evt))
             wasEmpty = true;
         evt = next;
     }
     globals.fDelayQHead = evt;
     SkMSec time = evt ? evt->fTime - now : 0;
     globals.fEventMutex.release();
     if (wasEmpty)
         SkEvent::SignalNonEmptyQueue();
     SkEvent::SignalQueueTimer(time);
 }
 int SkEvent::CountEventsOnQueue() {
     SkEvent_Globals& globals = getGlobals();
     globals.fEventMutex.acquire();
     int count = 0;
     const SkEvent* evt = globals.fEventQHead;
     while (evt) {
         count += 1;
         evt = evt->fNextEvent;
     }
     globals.fEventMutex.release();
     return count;
 }
 ///////////////////////////////////////////////////////////////////////////////
 void SkEvent::Init() {}
 void SkEvent::Term() {
     SkEvent_Globals& globals = getGlobals();
     SkEvent* evt = globals.fEventQHead;
     while (evt) {
         SkEvent* next = evt->fNextEvent;
         delete evt;
         evt = next;
     }
     evt = globals.fDelayQHead;
     while (evt) {
         SkEvent* next = evt->fNextEvent;
         delete evt;
         evt = next;
     }
 }

The Tor Browser / annotate

gfx/skia/trunk/src/views/SkEvent.cpp@129ffea94266 (annotated)

gfx/skia/trunk/src/views/SkEvent.cpp