зеркало из https://github.com/mozilla/gecko-dev.git
fix shaver's broken pool growing code. remove unused bitwise code.
This commit is contained in:
jband%netscape.com
Родитель
3c516ca121
Коммит
fb368b667d
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@ -32,7 +32,7 @@ CheckForRepeat(XPTCursor *cursor, void **addrp, XPTPool pool, PRUint32 len,
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#define CURS_POOL_OFFSET_RAW(cursor) \
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((cursor)->pool == XPT_HEADER \
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? (cursor)->offset \
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: (XPT_ASSERT((cursor)->state->data_offset), \
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: (XPT_ASSERT((cursor)->state->data_offset), \
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(cursor)->offset + (cursor)->state->data_offset))
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#define CURS_POOL_OFFSET(cursor) \
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@ -42,7 +42,7 @@ CheckForRepeat(XPTCursor *cursor, void **addrp, XPTPool pool, PRUint32 len,
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#define CURS_POINT(cursor) \
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((cursor)->state->pool->data[CURS_POOL_OFFSET(cursor)])
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#ifdef DEBUG_shaver
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#if defined(DEBUG_shaver) || defined(DEBUG_jband) || defined(DEBUG_mccabe)
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#define DBG(x) printf##x
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#else
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#define DBG(x) (0)
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@ -61,7 +61,8 @@ CheckForRepeat(XPTCursor *cursor, void **addrp, XPTPool pool, PRUint32 len,
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/* if we're in the data area and we're about to exceed the allocation */ \
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(CURS_POOL_OFFSET(cursor) + (space) > (cursor)->state->pool->allocated ? \
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/* then grow if we're in ENCODE mode */ \
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(ENCODING(cursor) ? GrowPool((cursor)->state->pool, 0) \
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(ENCODING(cursor) ? GrowPool((cursor)->state->pool, 0, \
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CURS_POOL_OFFSET(cursor) + (space)) \
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/* and fail if we're in DECODE mode */ \
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: (DBG(("can't extend in DECODE")) && PR_FALSE)) \
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/* otherwise we're OK */ \
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@ -75,7 +76,7 @@ CheckForRepeat(XPTCursor *cursor, void **addrp, XPTPool pool, PRUint32 len,
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PR_FALSE))
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/* increase the data allocation for the pool by XPT_GROW_CHUNK */
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#define XPT_GROW_CHUNK 8192
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#define XPT_GROW_CHUNK 8192
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/*
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* quick and dirty hardcoded hashtable, to avoid dependence on nspr or glib.
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@ -123,7 +124,7 @@ XPT_HashTableAdd(XPTHashTable *table, void *key, void *value) {
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while (*bucketloc != NULL)
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bucketloc = &((*bucketloc)->next);
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bucket = XPT_NEW(XPTHashRecord);
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bucket->key = key;
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bucket->value = value;
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@ -142,7 +143,7 @@ XPT_HashTableLookup(XPTHashTable *table, void *key) {
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}
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return NULL;
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}
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XPT_PUBLIC_API(XPTState *)
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XPT_NewXDRState(XPTMode mode, char *data, PRUint32 len)
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{
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@ -161,8 +162,6 @@ XPT_NewXDRState(XPTMode mode, char *data, PRUint32 len)
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state->pool->count = 0;
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state->pool->offset_map = XPT_NewHashTable();
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/* state->pool->offset_map = PL_NewHashTable(32, null_hash, PL_CompareValues, */
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/* PL_CompareValues, NULL, NULL); */
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if (!state->pool->offset_map)
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goto err_free_pool;
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@ -180,7 +179,6 @@ XPT_NewXDRState(XPTMode mode, char *data, PRUint32 len)
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err_free_hash:
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XPT_HashTableDestroy(state->pool->offset_map);
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/* PL_HashTableDestroy(state->pool->offset_map); */
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err_free_pool:
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XPT_DELETE(state->pool);
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err_free_state:
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@ -220,16 +218,30 @@ XPT_DataOffset(XPTState *state, PRUint32 *data_offsetp)
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*data_offsetp = state->data_offset;
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}
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/* if new_size is 0, just grow by the next chunk */
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/* if 'exact' is set use that, else grow by the next chunk but
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* be sure to grow no less that 'at_least' so that we can't get
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* behind on required space.
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*/
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static PRBool
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GrowPool(XPTDatapool *pool, PRInt32 new_size)
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GrowPool(XPTDatapool *pool, PRUint32 exact, PRUint32 at_least)
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{
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char *newdata = realloc(pool->data, new_size ? new_size :
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pool->allocated + XPT_GROW_CHUNK);
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PRUint32 total_size;
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char *newdata;
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if (exact) {
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XPT_ASSERT(exact > pool->allocated);
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total_size = exact;
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} else {
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total_size = pool->allocated + XPT_GROW_CHUNK;
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if (at_least > total_size)
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total_size = at_least;
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}
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newdata = realloc(pool->data, total_size);
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if (!newdata)
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return PR_FALSE;
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pool->data = newdata;
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pool->allocated += XPT_GROW_CHUNK;
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pool->allocated = total_size;
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return PR_TRUE;
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}
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@ -240,7 +252,7 @@ XPT_SetDataOffset(XPTState *state, PRUint32 data_offset)
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/* make sure we've allocated enough space for the header */
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if (state->mode == XPT_ENCODE &&
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data_offset > state->pool->allocated) {
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(void)GrowPool(state->pool, data_offset);
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(void)GrowPool(state->pool, data_offset, 0);
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}
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}
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@ -252,7 +264,7 @@ XPT_MakeCursor(XPTState *state, XPTPool pool, PRUint32 len, XPTCursor *cursor)
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cursor->bits = 0;
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cursor->offset = state->next_cursor[pool];
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if (!(CHECK_COUNT(cursor, len)))
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if (!(CHECK_COUNT(cursor, len)))
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return PR_FALSE;
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/* this check should be in CHECK_CURSOR */
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@ -347,7 +359,7 @@ XPT_DoString(XPTCursor *cursor, XPTString **strp)
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XPT_PREAMBLE_NO_ALLOC(cursor, strp, XPT_DATA, str->length + 2, my_cursor,
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already);
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return XPT_DoStringInline(&my_cursor, strp);
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}
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@ -357,7 +369,7 @@ XPT_DoCString(XPTCursor *cursor, char **identp)
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XPTCursor my_cursor;
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char *ident = *identp;
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PRUint32 offset = 0;
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XPTMode mode = cursor->state->mode;
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if (mode == XPT_DECODE) {
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@ -366,7 +378,7 @@ XPT_DoCString(XPTCursor *cursor, char **identp)
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if (!XPT_Do32(cursor, &offset))
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return PR_FALSE;
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if (!offset) {
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*identp = NULL;
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return PR_TRUE;
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@ -406,14 +418,14 @@ XPT_DoCString(XPTCursor *cursor, char **identp)
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&my_cursor) ||
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!XPT_Do32(cursor, &my_cursor.offset))
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return PR_FALSE;
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while(*ident)
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if (!XPT_Do8(&my_cursor, (PRUint8 *)ident++))
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return PR_FALSE;
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if (!XPT_Do8(&my_cursor, (PRUint8 *)ident)) /* write trailing zero */
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return PR_FALSE;
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}
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return PR_TRUE;
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}
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@ -552,7 +564,7 @@ XPT_Do32(XPTCursor *cursor, PRUint32 *u32p)
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cursor->offset++;
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u.b8[3] = CURS_POINT(cursor);
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*u32p = XPT_SWAB32(u.b32);
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}
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}
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cursor->offset++;
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return PR_TRUE;
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}
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@ -599,76 +611,4 @@ XPT_Do8(XPTCursor *cursor, PRUint8 *u8p)
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return PR_TRUE;
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}
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static PRBool
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do_bit(XPTCursor *cursor, PRUint8 *u8p, int bitno)
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{
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return PR_FALSE;
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#if 0
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int bit_value, delta, new_value;
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XPTDatapool *pool = cursor->pool;
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if (cursor->state->mode == XPT_ENCODE) {
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bit_value = (*u8p & 1) << (bitno); /* 7 = 0100 0000, 6 = 0010 0000 */
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if (bit_value) {
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delta = pool->bit + (bitno) - 7;
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new_value = delta >= 0 ? bit_value >> delta : bit_value << -delta;
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pool->data[pool->count] |= new_value;
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}
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} else {
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bit_value = pool->data[pool->count] & (1 << (7 - pool->bit));
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*u8p = bit_value >> (7 - pool->bit);
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}
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if (++pool->bit == 8) {
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pool->count++;
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pool->bit = 0;
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}
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return CHECK_COUNT(cursor);
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#endif
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}
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XPT_PUBLIC_API(PRBool)
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XPT_DoBits(XPTCursor *cursor, PRUint8 *u8p, int nbits)
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{
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#define DO_BIT(cursor, u8p, nbits) \
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if (!do_bit(cursor, u8p, nbits)) \
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return PR_FALSE;
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switch(nbits) {
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case 7:
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DO_BIT(cursor, u8p, 7);
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case 6:
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DO_BIT(cursor, u8p, 6);
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case 5:
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DO_BIT(cursor, u8p, 5);
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case 4:
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DO_BIT(cursor, u8p, 4);
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case 3:
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DO_BIT(cursor, u8p, 3);
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case 2:
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DO_BIT(cursor, u8p, 2);
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case 1:
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DO_BIT(cursor, u8p, 1);
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default:;
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};
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#undef DO_BIT
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return PR_TRUE;
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}
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XPT_PUBLIC_API(int)
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XPT_FlushBits(XPTCursor *cursor)
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{
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return 0;
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#if 0
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cursor->bits = 0;
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cursor->offset++;
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if (!CHECK_COUNT(cursor))
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return -1;
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return skipped == 8 ? 0 : skipped;
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#endif
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}
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