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annotate memory_profiler.cpp @ 55:1aba1b7a0a2c

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Added a 'nativeClass' property to object info method.
author Atul Varma <varmaa@toolness.com>
date Wed, 24 Jun 2009 18:32:14 -0700
parents c451579bf83c
children b36c15de56f6
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rev   line source
50
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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1 #include "jsdhash.h"
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2
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3 #include "memory_profiler.h"
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4 #include "server_socket.h"
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5
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6 #define SERVER_FILENAME "memory_profiler_server.js"
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7
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8 // TODO: Lots of code here is copied from spidermonkey-playground.cpp; we should
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9 // consolidate it.
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10
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11 /* The error reporter callback. */
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12 static void reportError(JSContext *cx, const char *message, JSErrorReport *report)
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13 {
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14 fprintf(stderr, "%s:%u:%s\n",
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15 report->filename ? report->filename : "<no filename>",
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16 (unsigned int) report->lineno,
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17 message);
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18 }
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19
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20 static JSClass global_class = {
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21 "serverGlobal", JSCLASS_GLOBAL_FLAGS,
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22 JS_PropertyStub, JS_PropertyStub, JS_PropertyStub, JS_PropertyStub,
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23 JS_EnumerateStub, JS_ResolveStub, JS_ConvertStub, JS_FinalizeStub,
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24 JSCLASS_NO_OPTIONAL_MEMBERS
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25 };
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26
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27 // This native JS function prints the given string to the console.
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28
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29 static JSBool print(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
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30 jsval *rval)
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31 {
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32 char *str;
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33
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34 if (!JS_ConvertArguments(cx, argc, argv, "s", &str))
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35 return JS_FALSE;
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36
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37 printf("%s\n", str);
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38
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39 return JS_TRUE;
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40 }
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41
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42 // Private structure to track the state of tracing the JS heap.
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43
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44 typedef struct TracingState {
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45 // Keeps track of what objects we've visited so far.
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46 JSDHashTable visited;
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47
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48 // Whether the tracing operation is successful or failed.
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49 JSBool result;
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51 // Class to look for.
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52 JSClass *classp;
51
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53
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54 // Runtime that we're tracing.
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55 JSRuntime *runtime;
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56
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57 // Structure required to use JS tracing functions.
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58 JSTracer tracer;
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59 };
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60
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61 // Static singleton for tracking the state of tracing the JS heap.
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62 static TracingState tracingState;
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63
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64 // JSTraceCallback for heap dumping and other operations.
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65
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66 static void traceCallback(JSTracer *trc, void *thing, uint32 kind)
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67 {
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68 switch (kind) {
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69 case JSTRACE_OBJECT:
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70 JSDHashEntryStub *entry = (JSDHashEntryStub *)
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71 JS_DHashTableOperate(&tracingState.visited,
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72 thing,
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73 JS_DHASH_LOOKUP);
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74 if (JS_DHASH_ENTRY_IS_FREE((JSDHashEntryHdr *)entry)) {
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75 entry = (JSDHashEntryStub *) JS_DHashTableOperate(&tracingState.visited,
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76 thing,
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77 JS_DHASH_ADD);
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78 if (entry == NULL) {
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79 JS_ReportOutOfMemory(trc->context);
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80 tracingState.result = JS_FALSE;
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81 return;
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82 }
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83 entry->key = thing;
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84 JS_TraceChildren(trc, thing, kind);
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85 }
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86 break;
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87 case JSTRACE_DOUBLE:
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88 break;
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89 case JSTRACE_STRING:
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90 break;
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91 }
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92 }
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93
51
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94 static intN countRoots(void *rp, const char *name, void *data)
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95 {
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96 return JS_MAP_GCROOT_NEXT;
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97 }
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98
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99 static intN rootMapFun(void *rp, const char *name, void *data)
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100 {
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101 jsval **currIndex = (jsval **) data;
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102 **currIndex = INT_TO_JSVAL((unsigned int) rp);
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103 *currIndex++;
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104 return JS_MAP_GCROOT_NEXT;
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105 }
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106
54
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107 static JSBool getObjInfo(JSContext *cx, JSObject *obj, uintN argc,
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108 jsval *argv, jsval *rval)
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109 {
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110 uint32 id;
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111
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112 if (!JS_ConvertArguments(cx, argc, argv, "u", &id))
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113 return JS_FALSE;
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114
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115 JSDHashEntryStub *entry = (JSDHashEntryStub *)
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116 JS_DHashTableOperate(&tracingState.visited,
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117 (void *) id,
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118 JS_DHASH_LOOKUP);
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diff changeset
119 if (entry == NULL) {
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120 JS_ReportOutOfMemory(cx);
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121 return JS_FALSE;
c451579bf83c Built out more of the /objects/ method.
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122 }
c451579bf83c Built out more of the /objects/ method.
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diff changeset
123
c451579bf83c Built out more of the /objects/ method.
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124 if (JS_DHASH_ENTRY_IS_BUSY((JSDHashEntryHdr *)entry)) {
c451579bf83c Built out more of the /objects/ method.
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125 JSObject *info = JS_NewObject(cx, NULL, NULL, NULL);
55
1aba1b7a0a2c Added a 'nativeClass' property to object info method.
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126
1aba1b7a0a2c Added a 'nativeClass' property to object info method.
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diff changeset
127 JSObject *target = (JSObject *) id;
1aba1b7a0a2c Added a 'nativeClass' property to object info method.
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128 JSClass *classp = JS_GET_CLASS(tracingState.tracer.context, target);
1aba1b7a0a2c Added a 'nativeClass' property to object info method.
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129 if (classp != NULL) {
1aba1b7a0a2c Added a 'nativeClass' property to object info method.
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diff changeset
130 // TODO: Should really be using an interned string here or something.
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131 JSString *name = JS_NewStringCopyZ(cx, classp->name);
1aba1b7a0a2c Added a 'nativeClass' property to object info method.
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diff changeset
132 if (name == NULL) {
1aba1b7a0a2c Added a 'nativeClass' property to object info method.
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diff changeset
133 JS_ReportOutOfMemory(cx);
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diff changeset
134 return JS_FALSE;
1aba1b7a0a2c Added a 'nativeClass' property to object info method.
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diff changeset
135 }
1aba1b7a0a2c Added a 'nativeClass' property to object info method.
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diff changeset
136 if (!JS_DefineProperty(cx, info, "nativeClass", STRING_TO_JSVAL(name),
1aba1b7a0a2c Added a 'nativeClass' property to object info method.
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diff changeset
137 NULL, NULL, JSPROP_ENUMERATE)) {
1aba1b7a0a2c Added a 'nativeClass' property to object info method.
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diff changeset
138 JS_ReportOutOfMemory(cx);
1aba1b7a0a2c Added a 'nativeClass' property to object info method.
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diff changeset
139 return JS_FALSE;
1aba1b7a0a2c Added a 'nativeClass' property to object info method.
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diff changeset
140 }
1aba1b7a0a2c Added a 'nativeClass' property to object info method.
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diff changeset
141 }
1aba1b7a0a2c Added a 'nativeClass' property to object info method.
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diff changeset
142
54
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diff changeset
143 *rval = OBJECT_TO_JSVAL(info);
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144 } else
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145 *rval = JSVAL_NULL;
c451579bf83c Built out more of the /objects/ method.
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146
c451579bf83c Built out more of the /objects/ method.
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147 return JS_TRUE;
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148 }
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diff changeset
149
51
8750e9ecf3af Added a getGCRoots() function.
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150 static JSBool getGCRoots(JSContext *cx, JSObject *obj, uintN argc,
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151 jsval *argv, jsval *rval)
8750e9ecf3af Added a getGCRoots() function.
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152 {
8750e9ecf3af Added a getGCRoots() function.
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153 uint32 numRoots = JS_MapGCRoots(tracingState.runtime, countRoots, NULL);
8750e9ecf3af Added a getGCRoots() function.
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diff changeset
154 jsval rootList[numRoots];
8750e9ecf3af Added a getGCRoots() function.
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diff changeset
155 jsval *currIndex = rootList;
8750e9ecf3af Added a getGCRoots() function.
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156
8750e9ecf3af Added a getGCRoots() function.
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diff changeset
157 JS_MapGCRoots(tracingState.runtime, rootMapFun, &currIndex);
8750e9ecf3af Added a getGCRoots() function.
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158
8750e9ecf3af Added a getGCRoots() function.
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diff changeset
159 JSObject *roots = JS_NewArrayObject(cx, numRoots, rootList);
8750e9ecf3af Added a getGCRoots() function.
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diff changeset
160 if (roots == NULL) {
8750e9ecf3af Added a getGCRoots() function.
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diff changeset
161 JS_ReportError(cx, "Creating array failed.");
8750e9ecf3af Added a getGCRoots() function.
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diff changeset
162 return JS_FALSE;
8750e9ecf3af Added a getGCRoots() function.
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diff changeset
163 }
8750e9ecf3af Added a getGCRoots() function.
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diff changeset
164
8750e9ecf3af Added a getGCRoots() function.
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diff changeset
165 *rval = OBJECT_TO_JSVAL(roots);
8750e9ecf3af Added a getGCRoots() function.
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diff changeset
166 return JS_TRUE;
8750e9ecf3af Added a getGCRoots() function.
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diff changeset
167 }
8750e9ecf3af Added a getGCRoots() function.
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diff changeset
168
50
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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diff changeset
169 static JSFunctionSpec server_global_functions[] = {
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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170 JS_FS("print", print, 1, 0, 0),
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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diff changeset
171 JS_FS("ServerSocket", createServerSocket, 0, 0, 0),
51
8750e9ecf3af Added a getGCRoots() function.
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diff changeset
172 JS_FS("getGCRoots", getGCRoots, 0, 0, 0),
54
c451579bf83c Built out more of the /objects/ method.
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diff changeset
173 JS_FS("getObjectInfo", getObjInfo, 1, 0, 0),
50
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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diff changeset
174 JS_FS_END
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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175 };
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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176
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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diff changeset
177 JSBool profileMemory(JSContext *cx, JSObject *obj, uintN argc,
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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diff changeset
178 jsval *argv, jsval *rval)
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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diff changeset
179 {
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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diff changeset
180 if (!JS_DHashTableInit(&tracingState.visited, JS_DHashGetStubOps(),
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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parents:
diff changeset
181 NULL, sizeof(JSDHashEntryStub),
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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parents:
diff changeset
182 JS_DHASH_DEFAULT_CAPACITY(100))) {
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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parents:
diff changeset
183 JS_ReportOutOfMemory(cx);
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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diff changeset
184 return JS_FALSE;
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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185 }
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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diff changeset
186
51
8750e9ecf3af Added a getGCRoots() function.
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diff changeset
187 tracingState.runtime = JS_GetRuntime(cx);
50
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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diff changeset
188 tracingState.result = JS_TRUE;
51
8750e9ecf3af Added a getGCRoots() function.
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diff changeset
189 tracingState.tracer.context = cx;
8750e9ecf3af Added a getGCRoots() function.
Atul Varma <varmaa@toolness.com>
parents: 50
diff changeset
190 tracingState.tracer.callback = traceCallback;
8750e9ecf3af Added a getGCRoots() function.
Atul Varma <varmaa@toolness.com>
parents: 50
diff changeset
191 JS_TraceRuntime(&tracingState.tracer);
50
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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diff changeset
192
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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parents:
diff changeset
193 if (!tracingState.result)
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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diff changeset
194 return JS_FALSE;
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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diff changeset
195
51
8750e9ecf3af Added a getGCRoots() function.
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diff changeset
196 JSRuntime *serverRuntime = JS_NewRuntime(8L * 1024L * 1024L);
50
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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parents:
diff changeset
197 if (serverRuntime == NULL) {
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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diff changeset
198 JS_ReportError(cx, "Couldn't create server JS runtime.");
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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diff changeset
199 return JS_FALSE;
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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diff changeset
200 }
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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parents:
diff changeset
201
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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parents:
diff changeset
202 JSContext *serverCx = JS_NewContext(serverRuntime, 8192);
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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parents:
diff changeset
203 if (serverCx == NULL) {
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
204 JS_ReportError(cx, "Couldn't create server JS context.");
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
205 return JS_FALSE;
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
206 }
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
207 JS_SetOptions(serverCx, JSOPTION_VAROBJFIX);
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
208 JS_SetVersion(serverCx, JSVERSION_LATEST);
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
209 JS_SetErrorReporter(serverCx, reportError);
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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diff changeset
210
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
211 JSObject *serverGlobal = JS_NewObject(serverCx, &global_class, NULL, NULL);
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
212 if (serverGlobal == NULL) {
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
213 JS_ReportError(cx, "Couldn't create server JS global.");
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
214 return JS_FALSE;
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
215 }
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
216
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
217 if (!JS_InitStandardClasses(serverCx, serverGlobal)) {
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
218 JS_ReportError(cx, "Couldn't init standard classes on server JS global.");
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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parents:
diff changeset
219 return JS_FALSE;
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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parents:
diff changeset
220 }
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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parents:
diff changeset
221
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
222 if (!JS_DefineFunctions(serverCx, serverGlobal, server_global_functions)) {
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
223 JS_ReportError(cx, "Couldn't define functions on server JS global.");
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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parents:
diff changeset
224 return JS_FALSE;
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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parents:
diff changeset
225 }
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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parents:
diff changeset
226
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
227 FILE *f = fopen(SERVER_FILENAME, "r");
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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parents:
diff changeset
228 if (!f) {
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
229 JS_ReportError(cx, "Couldn't open " SERVER_FILENAME);
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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parents:
diff changeset
230 return JS_FALSE;
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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parents:
diff changeset
231 }
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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parents:
diff changeset
232
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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parents:
diff changeset
233 fseek(f, 0, SEEK_END);
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
234 long fileSize = ftell(f);
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
235 fseek(f, 0, SEEK_SET);
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
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parents:
diff changeset
236
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
237 char source[fileSize];
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
238 fread(source, fileSize, 1, f);
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
Atul Varma <varmaa@toolness.com>
parents:
diff changeset
239 fclose(f);
853f80bd3b4b Added tentative profileMemory() server, which suspends the current JS runtime, creates a new one and runs a web server in it.
Atul Varma <varmaa@toolness.com>
parents:
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240
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241 jsval serverRval;
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242 if (!JS_EvaluateScript(serverCx, serverGlobal, source,
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243 fileSize, SERVER_FILENAME, 1,
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244 &serverRval)) {
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245 JS_ReportError(cx, "Server failed.");
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246 return JS_FALSE;
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247 }
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248
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249 /* Cleanup. */
54
c451579bf83c Built out more of the /objects/ method.
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250 JS_DHashTableFinish(&tracingState.visited);
50
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251 JS_DestroyContext(serverCx);
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252 JS_DestroyRuntime(serverRuntime);
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253
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254 *rval = JSVAL_VOID;
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255 return JS_TRUE;
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256 }