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Bug 1027528 part 17 - Make shell's OffThreadCompileScript work with Latin1 strings. r=bhackett

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This commit is contained in:
Jan de Mooij 2014-06-21 19:56:28 +02:00
parent f4a52669de
commit 47fae291f5
1 changed files with 32 additions and 13 deletions
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45
js/src/shell/js.cpp
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@ -3651,17 +3651,17 @@ class OffThreadState {
DONE /* compilation done: have token and source */
};
OffThreadState() : monitor(), state(IDLE), token() { }
OffThreadState() : monitor(), state(IDLE), token(), source(nullptr) { }
bool init() { return monitor.init(); }
bool startIfIdle(JSContext *cx, JSString *newSource) {
bool startIfIdle(JSContext *cx, ScopedJSFreePtr<jschar> &newSource) {
AutoLockMonitor alm(monitor);
if (state != IDLE)
return false;
JS_ASSERT(!token);
source.construct(cx, newSource);
source = newSource.forget();
state = COMPILING;
return true;
@ -3671,9 +3671,10 @@ class OffThreadState {
AutoLockMonitor alm(monitor);
JS_ASSERT(state == COMPILING);
JS_ASSERT(!token);
JS_ASSERT(source.ref());
JS_ASSERT(source);
source.destroy();
js_free(source);
source = nullptr;
state = IDLE;
}
@ -3682,7 +3683,7 @@ class OffThreadState {
AutoLockMonitor alm(monitor);
JS_ASSERT(state == COMPILING);
JS_ASSERT(!token);
JS_ASSERT(source.ref());
JS_ASSERT(source);
JS_ASSERT(newToken);
token = newToken;
@ -3700,8 +3701,9 @@ class OffThreadState {
alm.wait();
}
JS_ASSERT(source.ref());
source.destroy();
JS_ASSERT(source);
js_free(source);
source = nullptr;
JS_ASSERT(token);
void *holdToken = token;
@ -3714,7 +3716,7 @@ class OffThreadState {
Monitor monitor;
State state;
void *token;
Maybe<PersistentRootedString> source;
jschar *source;
};
static OffThreadState offThreadState;
@ -3766,17 +3768,34 @@ OffThreadCompileScript(JSContext *cx, unsigned argc, jsval *vp)
options.forceAsync = true;
JSString *scriptContents = args[0].toString();
const jschar *chars = JS_GetStringCharsZ(cx, scriptContents);
if (!chars)
AutoStableStringChars stableChars(cx);
if (!stableChars.initTwoByte(cx, scriptContents))
return false;
size_t length = JS_GetStringLength(scriptContents);
size_t length = scriptContents->length();
const jschar *chars = stableChars.twoByteRange().start().get();
// Make sure we own the string's chars, so that they are not freed before
// the compilation is finished.
ScopedJSFreePtr<jschar> ownedChars;
if (stableChars.maybeGiveOwnershipToCaller()) {
ownedChars = const_cast<jschar*>(chars);
} else {
jschar *copy = cx->pod_malloc<jschar>(length);
if (!copy)
return false;
mozilla::PodCopy(copy, chars, length);
ownedChars = copy;
chars = copy;
}
if (!JS::CanCompileOffThread(cx, options, length)) {
JS_ReportError(cx, "cannot compile code on worker thread");
return false;
}
if (!offThreadState.startIfIdle(cx, scriptContents)) {
if (!offThreadState.startIfIdle(cx, ownedChars)) {
JS_ReportError(cx, "called offThreadCompileScript without calling runOffThreadScript"
" to receive prior off-thread compilation");
return false;