Mercurial > hg > nginx
view src/os/unix/ngx_aio_write_chain.c @ 63:36d2c25cc9bb
nginx-0.0.1-2003-02-26-23:21:43 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Wed, 26 Feb 2003 20:21:43 +0000 |
parents | |
children | 738fe44c70d5 |
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#include <ngx_config.h> #include <ngx_core.h> #include <ngx_types.h> #include <ngx_alloc.h> #include <ngx_array.h> #include <ngx_hunk.h> #include <ngx_connection.h> #include <ngx_sendv.h> #include <ngx_sendfile.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.mem); buf = prev = ce->hunk->pos.mem; size = 0; /* coalesce the neighbouring chain entries */ while (ce && prev == ce->hunk->pos.mem) { size += ce->hunk->last.mem - ce->hunk->pos.mem; prev = ce->hunk->last.mem; ce = ce->next; } rc = ngx_event_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->pos.file _ ce->hunk->last.file - ce->hunk->pos.file); #endif if (sent >= ce->hunk->last.file - ce->hunk->pos.file) { sent -= ce->hunk->last.file - ce->hunk->pos.file; ce->hunk->pos.file = ce->hunk->last.file; #if (NGX_DEBUG_WRITE_CHAIN) ngx_log_debug(c->log, "write chain done: %qx %qd" _ ce->hunk->pos.file _ sent); #endif continue; } ce->hunk->pos.file += sent; #if (NGX_DEBUG_WRITE_CHAIN) ngx_log_debug(c->log, "write chain rest: %qx %qd" _ ce->hunk->pos.file _ ce->hunk->last.file - ce->hunk->pos.file); #endif break; } return ce; }