mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-01 14:45:29 +00:00
148 lines
3.3 KiB
C++
148 lines
3.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
|
|
* vim: set ts=8 sts=4 et sw=4 tw=99:
|
|
* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
/*
|
|
* JavaScript Debugging support - Atom support
|
|
*/
|
|
|
|
#include "jsd.h"
|
|
|
|
/* #define TEST_ATOMS 1 */
|
|
|
|
#ifdef TEST_ATOMS
|
|
static void
|
|
_testAtoms(JSDContext*jsdc)
|
|
{
|
|
JSDAtom* atom0 = jsd_AddAtom(jsdc, "foo");
|
|
JSDAtom* atom1 = jsd_AddAtom(jsdc, "foo");
|
|
JSDAtom* atom2 = jsd_AddAtom(jsdc, "bar");
|
|
JSDAtom* atom3 = jsd_CloneAtom(jsdc, atom1);
|
|
JSDAtom* atom4 = jsd_CloneAtom(jsdc, atom2);
|
|
|
|
const char* c0 = JSD_ATOM_TO_STRING(atom0);
|
|
const char* c1 = JSD_ATOM_TO_STRING(atom1);
|
|
const char* c2 = JSD_ATOM_TO_STRING(atom2);
|
|
const char* c3 = JSD_ATOM_TO_STRING(atom3);
|
|
const char* c4 = JSD_ATOM_TO_STRING(atom4);
|
|
|
|
jsd_DropAtom(jsdc, atom0);
|
|
jsd_DropAtom(jsdc, atom1);
|
|
jsd_DropAtom(jsdc, atom2);
|
|
jsd_DropAtom(jsdc, atom3);
|
|
jsd_DropAtom(jsdc, atom4);
|
|
}
|
|
#endif
|
|
|
|
static int
|
|
_atom_smasher(JSHashEntry *he, int i, void *arg)
|
|
{
|
|
JS_ASSERT(he);
|
|
JS_ASSERT(he->value);
|
|
JS_ASSERT(((JSDAtom*)(he->value))->str);
|
|
|
|
free(((JSDAtom*)(he->value))->str);
|
|
free(he->value);
|
|
he->value = NULL;
|
|
he->key = NULL;
|
|
return HT_ENUMERATE_NEXT;
|
|
}
|
|
|
|
static int
|
|
_compareAtomKeys(const void *v1, const void *v2)
|
|
{
|
|
return 0 == strcmp((const char*)v1, (const char*)v2);
|
|
}
|
|
|
|
static int
|
|
_compareAtoms(const void *v1, const void *v2)
|
|
{
|
|
return 0 == strcmp(((JSDAtom*)v1)->str, ((JSDAtom*)v2)->str);
|
|
}
|
|
|
|
|
|
JSBool
|
|
jsd_CreateAtomTable(JSDContext* jsdc)
|
|
{
|
|
jsdc->atoms = JS_NewHashTable(256, JS_HashString,
|
|
_compareAtomKeys, _compareAtoms,
|
|
NULL, NULL);
|
|
#ifdef TEST_ATOMS
|
|
_testAtoms(jsdc);
|
|
#endif
|
|
return !!jsdc->atoms;
|
|
}
|
|
|
|
void
|
|
jsd_DestroyAtomTable(JSDContext* jsdc)
|
|
{
|
|
if( jsdc->atoms )
|
|
{
|
|
JS_HashTableEnumerateEntries(jsdc->atoms, _atom_smasher, NULL);
|
|
JS_HashTableDestroy(jsdc->atoms);
|
|
jsdc->atoms = NULL;
|
|
}
|
|
}
|
|
|
|
JSDAtom*
|
|
jsd_AddAtom(JSDContext* jsdc, const char* str)
|
|
{
|
|
JSDAtom* atom;
|
|
|
|
if(!str)
|
|
{
|
|
JS_ASSERT(0);
|
|
return NULL;
|
|
}
|
|
|
|
JSD_LOCK_ATOMS(jsdc);
|
|
|
|
atom = (JSDAtom*) JS_HashTableLookup(jsdc->atoms, str);
|
|
|
|
if( atom )
|
|
atom->refcount++;
|
|
else
|
|
{
|
|
atom = (JSDAtom*) malloc(sizeof(JSDAtom));
|
|
if( atom )
|
|
{
|
|
atom->str = strdup(str);
|
|
atom->refcount = 1;
|
|
if(!JS_HashTableAdd(jsdc->atoms, atom->str, atom))
|
|
{
|
|
free(atom->str);
|
|
free(atom);
|
|
atom = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
JSD_UNLOCK_ATOMS(jsdc);
|
|
return atom;
|
|
}
|
|
|
|
JSDAtom*
|
|
jsd_CloneAtom(JSDContext* jsdc, JSDAtom* atom)
|
|
{
|
|
JSD_LOCK_ATOMS(jsdc);
|
|
atom->refcount++;
|
|
JSD_UNLOCK_ATOMS(jsdc);
|
|
return atom;
|
|
}
|
|
|
|
void
|
|
jsd_DropAtom(JSDContext* jsdc, JSDAtom* atom)
|
|
{
|
|
JSD_LOCK_ATOMS(jsdc);
|
|
if(! --atom->refcount)
|
|
{
|
|
JS_HashTableRemove(jsdc->atoms, atom->str);
|
|
free(atom->str);
|
|
free(atom);
|
|
}
|
|
JSD_UNLOCK_ATOMS(jsdc);
|
|
}
|
|
|