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freeing ooseq pbufs when the pbuf pool is empty implemented for NO_SYS==1: when not using sys_check_timeouts(), call PBUF_CHECK_FREE_OOSEQ() at regular intervals from main level.

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This commit is contained in:
Simon Goldschmidt
2011-07-22 21:05:10 +02:00
parent 78ac382fdf
commit cc3b4dff20
3 changed files with 61 additions and 23 deletions
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18
src/include/lwip/pbuf.h
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@@ -127,6 +127,24 @@ struct pbuf_custom {
};
#endif /* LWIP_SUPPORT_CUSTOM_PBUF */
#if LWIP_TCP && TCP_QUEUE_OOSEQ
/** Define this to 0 to prevent freeing ooseq pbufs when the PBUF_POOL is empty */
#ifndef PBUF_POOL_FREE_OOSEQ
#define PBUF_POOL_FREE_OOSEQ 1
#endif /* PBUF_POOL_FREE_OOSEQ */
#if NO_SYS && PBUF_POOL_FREE_OOSEQ
extern volatile u8_t pbuf_free_ooseq_pending;
void pbuf_free_ooseq();
/** When not using sys_check_timeouts(), call PBUF_CHECK_FREE_OOSEQ()
at regular intervals from main level to check if ooseq pbufs need to be
freed! */
#define PBUF_CHECK_FREE_OOSEQ() do { if(pbuf_free_ooseq_pending) { \
/* pbuf_alloc() reported PBUF_POOL to be empty -> try to free some \
ooseq queued pbufs now */ \
pbuf_free_ooseq(); }}while(0)
#endif /* NO_SYS && PBUF_POOL_FREE_OOSEQ*/
#endif /* LWIP_TCP && TCP_QUEUE_OOSEQ */
/* Initializes the pbuf module. This call is empty for now, but may not be in future. */
#define pbuf_init()