Mercurial > hg > nginx
view src/os/unix/ngx_aio_write_chain.c @ 93:738fe44c70d5
nginx-0.0.1-2003-05-21-17:28:21 import
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Wed, 21 May 2003 13:28:21 +0000 |
parents | 36d2c25cc9bb |
children | b48066122884 |
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#include <ngx_config.h> #include <ngx_core.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) { ngx_log_debug(c->log, "aio_write ce: %x" _ ce->hunk->pos); 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); ngx_log_debug(c->log, "aio_write rc: %d" _ rc); if (rc > 0) { sent += rc; c->sent += rc; } else if (rc == NGX_ERROR) { return NGX_CHAIN_ERROR; } else if (rc == NGX_AGAIN) { break; } } #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 (NGX_DEBUG_WRITE_CHAIN) ngx_log_debug(c->log, "write chain: %x %qx %qd" _ ce->hunk->type _ ce->hunk->file_pos _ ce->hunk->file_last - ce->hunk->file_pos); #endif if (sent >= ce->hunk->file_last - ce->hunk->file_pos) { sent -= ce->hunk->file_last - ce->hunk->file_pos; ce->hunk->file_pos = ce->hunk->file_last; #if (NGX_DEBUG_WRITE_CHAIN) ngx_log_debug(c->log, "write chain done: %qx %qd" _ ce->hunk->file_pos _ sent); #endif continue; } ce->hunk->file_pos += sent; #if (NGX_DEBUG_WRITE_CHAIN) ngx_log_debug(c->log, "write chain rest: %qx %qd" _ ce->hunk->file_pos _ ce->hunk->file_last - ce->hunk->file_pos); #endif break; } return ce; }