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Bug 401254: new shell function gcparam as a wrapper for JS_SetGCParameter. r=brendan. Browser builds do not use the file.

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This commit is contained in:
igor@mir2.org 2007-10-27 16:04:13 -07:00
parent ceacf65c1c
commit 22632f27dc
1 changed files with 52 additions and 11 deletions
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63
js/src/js.c
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@ -766,6 +766,47 @@ GC(JSContext *cx, uintN argc, jsval *vp)
return JS_TRUE;
}
static JSBool
GCParameter(JSContext *cx, uintN argc, jsval *vp)
{
jsval *argv;
JSString *str;
const char *paramName;
JSGCParamKey param;
uint32 value;
argv = JS_ARGV(cx, vp);
str = JS_ValueToString(cx, argv[0]);
if (!str)
return JS_FALSE;
argv[0] = STRING_TO_JSVAL(str);
paramName = JS_GetStringBytes(str);
if (!paramName)
return JS_FALSE;
if (strcmp(paramName, "maxBytes") == 0) {
param = JSGC_MAX_BYTES;
} else if (strcmp(paramName, "maxMallocBytes") == 0) {
param = JSGC_MAX_MALLOC_BYTES;
} else {
JS_ReportError(cx,
"the first argument argument must be either maxBytes "
"or maxMallocBytes");
return JS_FALSE;
}
if (!JS_ValueToECMAUint32(cx, argv[1], &value))
return JS_FALSE;
if (value == 0) {
JS_ReportError(cx,
"the second argument must be convertable to uint32 with "
"non-zero value");
return JS_FALSE;
}
JS_SetGCParameter(cx->runtime, param, value);
*vp = JSVAL_VOID;
return JS_TRUE;
}
#ifdef JS_GC_ZEAL
static JSBool
GCZeal(JSContext *cx, uintN argc, jsval *vp)
@ -872,9 +913,9 @@ CountHeap(JSContext *cx, uintN argc, jsval *vp)
startThing = JSVAL_TO_TRACEABLE(v);
startTraceKind = JSVAL_TRACE_KIND(v);
} else if (v != JSVAL_NULL) {
fprintf(gErrFile,
"countHeap: argument 1 is not null or a heap-allocated "
"thing\n");
JS_ReportError(cx,
"the first argument is not null or a heap-allocated "
"thing");
return JS_FALSE;
}
}
@ -893,9 +934,7 @@ CountHeap(JSContext *cx, uintN argc, jsval *vp)
break;
}
if (++i == JS_ARRAY_LENGTH(traceKindNames)) {
fprintf(gErrFile,
"countHeap: trace kind name '%s' is unknown\n",
bytes);
JS_ReportError(cx, "trace kind name '%s' is unknown", bytes);
return JS_FALSE;
}
}
@ -1612,8 +1651,7 @@ DumpHeap(JSContext *cx, uintN argc, jsval *vp)
} else {
dumpFile = fopen(fileName, "w");
if (!dumpFile) {
fprintf(gErrFile, "dumpHeap: can't open %s: %s\n",
fileName, strerror(errno));
JS_ReportError(cx, "can't open %s: %s", fileName, strerror(errno));
return JS_FALSE;
}
}
@ -1625,9 +1663,8 @@ DumpHeap(JSContext *cx, uintN argc, jsval *vp)
return ok;
not_traceable_arg:
fprintf(gErrFile,
"dumpHeap: argument '%s' is not null or a heap-allocated thing\n",
badTraceArg);
JS_ReportError(cx, "argument '%s' is not null or a heap-allocated thing",
badTraceArg);
return JS_FALSE;
}
@ -2433,6 +2470,7 @@ static JSFunctionSpec shell_functions[] = {
JS_FS("help", Help, 0,0,0),
JS_FS("quit", Quit, 0,0,0),
JS_FN("gc", GC, 0,0,0),
JS_FN("gcparam", GCParameter, 2,2,0),
JS_FN("countHeap", CountHeap, 0,0,0),
#ifdef JS_GC_ZEAL
JS_FN("gczeal", GCZeal, 1,1,0),
@ -2484,6 +2522,9 @@ static const char *const shell_help_messages[] = {
"help([name ...]) Display usage and help messages",
"quit() Quit the shell",
"gc() Run the garbage collector",
"gcparam(name, value)\n"
" Wrapper for JS_SetGCParameter. The name must be either 'maxBytes' or\n"
" 'maxMallocBytes' and the value must be convertable to a positive uint32",
"countHeap([start[, kind]])\n"
" Count the number of live GC things in the heap or things reachable from\n"
" start when it is given and is not null. kind is either 'all' (default) to\n"