Mercurial > hg > nginx-quic
view src/os/unix/ngx_aio_write_chain.c @ 147:be71fca7f9d7
nginx-0.0.1-2003-10-14-19:06:38 import
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Tue, 14 Oct 2003 15:06:38 +0000 |
parents | ef8c87afcfc5 |
children | 84036764e215 |
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#include <ngx_config.h> #include <ngx_core.h> #include <ngx_event.h> #include <ngx_aio.h> ngx_chain_t *ngx_aio_write_chain(ngx_connection_t *c, ngx_chain_t *in) { int rc; char *buf, *prev; off_t sent; size_t size; ngx_err_t err; ngx_chain_t *ce; sent = 0; ce = in; while (ce) { /* we can post the single aio operation only */ if (c->write->active) { return ce; } buf = prev = ce->hunk->pos; size = 0; /* coalesce the neighbouring chain entries */ while (ce && prev == ce->hunk->pos) { size += ce->hunk->last - ce->hunk->pos; prev = ce->hunk->last; ce = ce->next; } rc = ngx_aio_write(c, buf, size); #if (NGX_DEBUG_WRITE_CHAIN) ngx_log_debug(c->log, "aio_write rc: %d" _ rc); #endif if (rc == NGX_ERROR) { return NGX_CHAIN_ERROR; } if (rc > 0) { sent += rc; c->sent += rc; } #if (NGX_DEBUG_WRITE_CHAIN) ngx_log_debug(c->log, "aio_write sent: " OFF_FMT _ c->sent); #endif for (ce = in; ce; ce = ce->next) { if (sent >= ce->hunk->last - ce->hunk->pos) { sent -= ce->hunk->last - ce->hunk->pos; ce->hunk->pos = ce->hunk->last; continue; } ce->hunk->pos += sent; break; } } return ce; }