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snapshot socket.[ch] code and commit dynbuf_t -> buffer_t changes

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This commit is contained in:
Michael Graff
1999-09-02 02:10:44 +00:00
parent 45a1684159
commit 4556681e19
9 changed files with 170 additions and 117 deletions
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48
lib/isc/buffer.c
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@@ -23,17 +23,14 @@
#include <isc/buffer.h>
#define BUFFER_MAGIC 0x42756621U /* Buf!. */
#define DYNBUFFER_MAGIC 0x64427566U /* dBuf. */
#define VALID_BUFFER(b) ((b) != NULL && \
(b)->magic == BUFFER_MAGIC)
#define VALID_DYNBUFFER(b) ((b) != NULL && \
(b)->magic == DYNBUFFER_MAGIC)
void
isc_buffer_init(isc_buffer_t *b, void *base, unsigned int length,
unsigned int type) {
unsigned int type)
{
/*
* Make 'b' refer to the 'length'-byte region starting at base.
*/
@@ -47,6 +44,8 @@ isc_buffer_init(isc_buffer_t *b, void *base, unsigned int length,
b->used = 0;
b->current = 0;
b->active = 0;
b->mctx = NULL;
ISC_LINK_INIT(b, link);
}
void
@@ -56,6 +55,8 @@ isc_buffer_invalidate(isc_buffer_t *b) {
*/
REQUIRE(VALID_BUFFER(b));
REQUIRE(!ISC_LINK_LINKED(b, link));
REQUIRE(b->mctx == NULL);
b->magic = 0;
b->type = 0;
@@ -390,23 +391,21 @@ isc_buffer_putuint32(isc_buffer_t *b, isc_uint32_t val)
}
isc_result_t
isc_dynbuffer_allocate(isc_mem_t *mctx, isc_dynbuffer_t **dynbuffer,
unsigned int length, unsigned int type)
isc_buffer_allocate(isc_mem_t *mctx, isc_buffer_t **dynbuffer,
unsigned int length, unsigned int type)
{
isc_dynbuffer_t *dbuf;
isc_buffer_t *dbuf;
REQUIRE(dynbuffer != NULL);
REQUIRE(*dynbuffer == NULL);
dbuf = isc_mem_get(mctx, length + sizeof(isc_dynbuffer_t));
dbuf = isc_mem_get(mctx, length + sizeof(isc_buffer_t));
if (dbuf == NULL)
return (ISC_R_NOMEMORY);
dbuf->magic = DYNBUFFER_MAGIC;
ISC_LINK_INIT(dbuf, link);
isc_buffer_init(&dbuf->buffer,
((unsigned char *)dbuf) + sizeof(isc_dynbuffer_t),
isc_buffer_init(dbuf, ((unsigned char *)dbuf) + sizeof(isc_buffer_t),
length, type);
dbuf->mctx = mctx;
*dynbuffer = dbuf;
@@ -414,28 +413,23 @@ isc_dynbuffer_allocate(isc_mem_t *mctx, isc_dynbuffer_t **dynbuffer,
}
void
isc_dynbuffer_reset(isc_dynbuffer_t *dynbuffer)
{
REQUIRE(VALID_DYNBUFFER(dynbuffer));
isc_buffer_clear(&dynbuffer->buffer);
}
void
isc_dynbuffer_free(isc_mem_t *mctx, isc_dynbuffer_t **dynbuffer)
isc_buffer_free(isc_buffer_t **dynbuffer)
{
unsigned int real_length;
isc_dynbuffer_t *dbuf;
isc_buffer_t *dbuf;
isc_mem_t *mctx;
REQUIRE(dynbuffer != NULL);
REQUIRE(VALID_DYNBUFFER(*dynbuffer));
REQUIRE(VALID_BUFFER(*dynbuffer));
REQUIRE((*dynbuffer)->mctx != NULL);
dbuf = *dynbuffer;
*dynbuffer = NULL; /* destroy external reference */
real_length = dbuf->buffer.length + sizeof(isc_dynbuffer_t);
isc_buffer_invalidate(&dbuf->buffer);
dbuf->magic = 0;
real_length = dbuf->length + sizeof(isc_buffer_t);
mctx = dbuf->mctx;
dbuf->mctx = NULL;
isc_buffer_invalidate(dbuf);
isc_mem_put(mctx, dbuf, real_length);
}