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60 lines
1.4 KiB
C
60 lines
1.4 KiB
C
/* Copyright (c) 2008 Victor Julien <victor@inliniac.net> */
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#include "vips.h"
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#include "decode.h"
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#include "packet-queue.h"
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void PacketEnqueue (PacketQueue *q, Packet *p) {
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/* more packets in queue */
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if (q->top != NULL) {
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p->next = q->top;
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q->top->prev = p;
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q->top = p;
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/* only packet */
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} else {
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q->top = p;
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q->bot = p;
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}
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q->len++;
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#ifdef DBG_PERF
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if (q->len > q->dbg_maxlen)
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q->dbg_maxlen = q->len;
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#endif /* DBG_PERF */
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}
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static u_int32_t dbg_packetdequeue = 0;
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Packet *PacketDequeue (PacketQueue *q) {
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Packet *p = q->bot;
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if (p == NULL) {
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/* queue empty, alloc a new packet */
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p = malloc(sizeof(Packet));
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if (p == NULL) {
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printf("ERROR: malloc failed: %s\n", strerror(errno));
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return NULL;
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}
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CLEAR_TCP_PACKET(p);
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CLEAR_PACKET(p);
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dbg_packetdequeue++;
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printf("PacketDequeue: alloced a new packet. MAX_PENDING %u, extra alloc: %u\n", MAX_PENDING, dbg_packetdequeue);
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} else {
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/* more packets in queue */
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if (q->bot->prev != NULL) {
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q->bot = q->bot->prev;
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q->bot->next = NULL;
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/* just the one we remove, so now empty */
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} else {
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q->top = NULL;
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q->bot = NULL;
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}
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q->len--;
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}
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p->next = NULL;
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p->prev = NULL;
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return p;
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}
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