mirror of
https://github.com/mozilla/gecko-dev.git
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332 lines
8.2 KiB
C
332 lines
8.2 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/*
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* JavaScript Debugging support - Hook support
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*/
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#include "jsd.h"
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JSTrapStatus
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jsd_InterruptHandler(JSContext *cx, JSScript *script, jsbytecode *pc, jsval *rval,
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void *closure)
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{
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JSDScript* jsdscript;
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JSDContext* jsdc = (JSDContext*) closure;
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JSD_ExecutionHookProc hook;
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void* hookData;
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if( ! jsdc || ! jsdc->inited )
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return JSTRAP_CONTINUE;
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if( JSD_IS_DANGEROUS_THREAD(jsdc) )
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return JSTRAP_CONTINUE;
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/* local in case jsdc->interruptHook gets cleared on another thread */
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JSD_LOCK();
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hook = jsdc->interruptHook;
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hookData = jsdc->interruptHookData;
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JSD_UNLOCK();
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if (!hook)
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return JSTRAP_CONTINUE;
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JSD_LOCK_SCRIPTS(jsdc);
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jsdscript = jsd_FindOrCreateJSDScript(jsdc, cx, script, NULL);
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JSD_UNLOCK_SCRIPTS(jsdc);
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if( ! jsdscript )
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return JSTRAP_CONTINUE;
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#ifdef LIVEWIRE
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if( ! jsdlw_UserCodeAtPC(jsdc, jsdscript, (uintptr_t)pc) )
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return JSTRAP_CONTINUE;
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#endif
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return jsd_CallExecutionHook(jsdc, cx, JSD_HOOK_INTERRUPTED,
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hook, hookData, rval);
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}
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JSTrapStatus
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jsd_DebuggerHandler(JSContext *cx, JSScript *script, jsbytecode *pc,
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jsval *rval, void *closure)
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{
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JSDScript* jsdscript;
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JSDContext* jsdc = (JSDContext*) closure;
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JSD_ExecutionHookProc hook;
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void* hookData;
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if( ! jsdc || ! jsdc->inited )
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return JSTRAP_CONTINUE;
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if( JSD_IS_DANGEROUS_THREAD(jsdc) )
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return JSTRAP_CONTINUE;
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/* local in case jsdc->debuggerHook gets cleared on another thread */
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JSD_LOCK();
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hook = jsdc->debuggerHook;
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hookData = jsdc->debuggerHookData;
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JSD_UNLOCK();
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if(!hook)
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return JSTRAP_CONTINUE;
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JSD_LOCK_SCRIPTS(jsdc);
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jsdscript = jsd_FindOrCreateJSDScript(jsdc, cx, script, NULL);
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JSD_UNLOCK_SCRIPTS(jsdc);
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if( ! jsdscript )
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return JSTRAP_CONTINUE;
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return jsd_CallExecutionHook(jsdc, cx, JSD_HOOK_DEBUGGER_KEYWORD,
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hook, hookData, rval);
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}
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JSTrapStatus
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jsd_ThrowHandler(JSContext *cx, JSScript *script, jsbytecode *pc,
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jsval *rval, void *closure)
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{
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JSDScript* jsdscript;
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JSDContext* jsdc = (JSDContext*) closure;
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JSD_ExecutionHookProc hook;
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void* hookData;
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if( ! jsdc || ! jsdc->inited )
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return JSTRAP_CONTINUE;
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if( JSD_IS_DANGEROUS_THREAD(jsdc) )
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return JSTRAP_CONTINUE;
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/* local in case jsdc->throwHook gets cleared on another thread */
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JSD_LOCK();
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hook = jsdc->throwHook;
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hookData = jsdc->throwHookData;
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JSD_UNLOCK();
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if (!hook)
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return JSTRAP_CONTINUE;
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JSD_LOCK_SCRIPTS(jsdc);
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jsdscript = jsd_FindOrCreateJSDScript(jsdc, cx, script, NULL);
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JSD_UNLOCK_SCRIPTS(jsdc);
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if( ! jsdscript )
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return JSTRAP_CONTINUE;
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JS_GetPendingException(cx, rval);
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return jsd_CallExecutionHook(jsdc, cx, JSD_HOOK_THROW,
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hook, hookData, rval);
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}
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JSTrapStatus
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jsd_CallExecutionHook(JSDContext* jsdc,
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JSContext *cx,
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unsigned type,
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JSD_ExecutionHookProc hook,
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void* hookData,
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jsval* rval)
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{
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unsigned hookanswer = JSD_HOOK_THROW == type ?
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JSD_HOOK_RETURN_CONTINUE_THROW :
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JSD_HOOK_RETURN_CONTINUE;
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JSDThreadState* jsdthreadstate;
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if(hook && NULL != (jsdthreadstate = jsd_NewThreadState(jsdc,cx)))
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{
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if ((type != JSD_HOOK_THROW && type != JSD_HOOK_INTERRUPTED) ||
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jsdc->flags & JSD_MASK_TOP_FRAME_ONLY ||
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!(jsdthreadstate->flags & TS_HAS_DISABLED_FRAME))
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{
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/*
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* if it's not a throw and it's not an interrupt,
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* or we're only masking the top frame,
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* or there are no disabled frames in this stack,
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* then call out.
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*/
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hookanswer = hook(jsdc, jsdthreadstate, type, hookData, rval);
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jsd_DestroyThreadState(jsdc, jsdthreadstate);
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}
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}
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switch(hookanswer)
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{
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case JSD_HOOK_RETURN_ABORT:
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case JSD_HOOK_RETURN_HOOK_ERROR:
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return JSTRAP_ERROR;
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case JSD_HOOK_RETURN_RET_WITH_VAL:
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return JSTRAP_RETURN;
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case JSD_HOOK_RETURN_THROW_WITH_VAL:
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return JSTRAP_THROW;
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case JSD_HOOK_RETURN_CONTINUE:
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break;
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case JSD_HOOK_RETURN_CONTINUE_THROW:
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/* only makes sense for jsd_ThrowHandler (which init'd rval) */
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JS_ASSERT(JSD_HOOK_THROW == type);
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return JSTRAP_THROW;
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default:
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JS_ASSERT(0);
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break;
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}
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return JSTRAP_CONTINUE;
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}
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JSBool
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jsd_CallCallHook (JSDContext* jsdc,
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JSContext *cx,
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unsigned type,
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JSD_CallHookProc hook,
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void* hookData)
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{
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JSBool hookanswer;
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JSDThreadState* jsdthreadstate;
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hookanswer = JS_FALSE;
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if(hook && NULL != (jsdthreadstate = jsd_NewThreadState(jsdc, cx)))
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{
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hookanswer = hook(jsdc, jsdthreadstate, type, hookData);
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jsd_DestroyThreadState(jsdc, jsdthreadstate);
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}
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return hookanswer;
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}
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JSBool
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jsd_SetInterruptHook(JSDContext* jsdc,
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JSD_ExecutionHookProc hook,
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void* callerdata)
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{
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JSD_LOCK();
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jsdc->interruptHookData = callerdata;
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jsdc->interruptHook = hook;
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JS_SetInterrupt(jsdc->jsrt, jsd_InterruptHandler, (void*) jsdc);
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JSD_UNLOCK();
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return JS_TRUE;
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}
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JSBool
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jsd_ClearInterruptHook(JSDContext* jsdc)
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{
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JSD_LOCK();
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JS_ClearInterrupt(jsdc->jsrt, NULL, NULL );
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jsdc->interruptHook = NULL;
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JSD_UNLOCK();
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return JS_TRUE;
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}
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JSBool
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jsd_SetDebugBreakHook(JSDContext* jsdc,
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JSD_ExecutionHookProc hook,
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void* callerdata)
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{
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JSD_LOCK();
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jsdc->debugBreakHookData = callerdata;
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jsdc->debugBreakHook = hook;
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JSD_UNLOCK();
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return JS_TRUE;
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}
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JSBool
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jsd_ClearDebugBreakHook(JSDContext* jsdc)
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{
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JSD_LOCK();
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jsdc->debugBreakHook = NULL;
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JSD_UNLOCK();
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return JS_TRUE;
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}
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JSBool
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jsd_SetDebuggerHook(JSDContext* jsdc,
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JSD_ExecutionHookProc hook,
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void* callerdata)
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{
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JSD_LOCK();
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jsdc->debuggerHookData = callerdata;
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jsdc->debuggerHook = hook;
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JSD_UNLOCK();
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return JS_TRUE;
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}
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JSBool
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jsd_ClearDebuggerHook(JSDContext* jsdc)
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{
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JSD_LOCK();
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jsdc->debuggerHook = NULL;
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JSD_UNLOCK();
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return JS_TRUE;
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}
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JSBool
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jsd_SetThrowHook(JSDContext* jsdc,
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JSD_ExecutionHookProc hook,
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void* callerdata)
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{
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JSD_LOCK();
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jsdc->throwHookData = callerdata;
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jsdc->throwHook = hook;
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JSD_UNLOCK();
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return JS_TRUE;
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}
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JSBool
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jsd_ClearThrowHook(JSDContext* jsdc)
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{
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JSD_LOCK();
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jsdc->throwHook = NULL;
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JSD_UNLOCK();
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return JS_TRUE;
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}
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JSBool
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jsd_SetFunctionHook(JSDContext* jsdc,
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JSD_CallHookProc hook,
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void* callerdata)
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{
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JSD_LOCK();
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jsdc->functionHookData = callerdata;
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jsdc->functionHook = hook;
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JSD_UNLOCK();
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return JS_TRUE;
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}
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JSBool
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jsd_ClearFunctionHook(JSDContext* jsdc)
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{
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JSD_LOCK();
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jsdc->functionHook = NULL;
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JSD_UNLOCK();
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return JS_TRUE;
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}
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JSBool
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jsd_SetTopLevelHook(JSDContext* jsdc,
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JSD_CallHookProc hook,
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void* callerdata)
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{
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JSD_LOCK();
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jsdc->toplevelHookData = callerdata;
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jsdc->toplevelHook = hook;
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JSD_UNLOCK();
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return JS_TRUE;
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}
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JSBool
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jsd_ClearTopLevelHook(JSDContext* jsdc)
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{
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JSD_LOCK();
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jsdc->toplevelHook = NULL;
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JSD_UNLOCK();
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return JS_TRUE;
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}
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