/*
*查询hprof class id.
*/
hprof_class_object_id hprofLookupClassId(const ClassObject *clazz)
{
void *val;
if (clazz == NULL) {
/* Someone's probably looking up the superclass
* of java.lang.Object or of a primitive class.
*/
return (hprof_class_object_id)0;
}
dvmHashTableLock(gClassHashTable);
/* We're using the hash table as a list.
* TODO: replace the hash table with a more suitable structure
*/
val = dvmHashTableLookup(gClassHashTable, computeClassHash(clazz),
(void *)clazz, classCmp, true);
assert(val != NULL);
dvmHashTableUnlock(gClassHashTable);
/* Make sure that the class's name is in the string table.
* This is a bunch of extra work that we only have to do
* because of the order of tables in the output file
* (strings need to be dumped before classes).
*/
getPrettyClassNameId(clazz->descriptor);
return (hprof_class_object_id)clazz;
}
int
hprofDumpClasses(hprof_context_t *ctx)
{
HashIter iter;
hprof_record_t *rec = &ctx->curRec;
int err;
dvmHashTableLock(gClassHashTable);
for (err = 0, dvmHashIterBegin(gClassHashTable, &iter);
err == 0 && !dvmHashIterDone(&iter);
dvmHashIterNext(&iter))
{
err = hprofStartNewRecord(ctx, HPROF_TAG_LOAD_CLASS, HPROF_TIME);
if (err == 0) {
const ClassObject *clazz;
clazz = (const ClassObject *)dvmHashIterData(&iter);
assert(clazz != NULL);
/* LOAD CLASS format:
*
* u4: class serial number (always > 0)
* ID: class object ID
* u4: stack trace serial number
* ID: class name string ID
*
* We use the address of the class object structure as its ID.
*/
hprofAddU4ToRecord(rec, clazz->serialNumber);
hprofAddIdToRecord(rec, (hprof_class_object_id)clazz);
hprofAddU4ToRecord(rec, HPROF_NULL_STACK_TRACE);
hprofAddIdToRecord(rec, getPrettyClassNameId(clazz->descriptor));
}
}
dvmHashTableUnlock(gClassHashTable);
return err;
}
