diff options
author | Igor Sysoev <igor@sysoev.ru> | 2003-02-26 23:21:43 +0300 |
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committer | Igor Sysoev <igor@sysoev.ru> | 2003-02-26 23:21:43 +0300 |
commit | ff148df8f694212e2cf13f0d43532949433831a2 (patch) | |
tree | 1323b3de05544f57639c20080db3ac386bc0050d /src/os/unix/ngx_aio_write_chain.c | |
parent | 9a5f495afdf8cc1d33ae1741e1409c0bdcc3589d (diff) |
nginx-0.0.1-2003-02-26-23:21:43 import
Diffstat (limited to 'src/os/unix/ngx_aio_write_chain.c')
-rw-r--r-- | src/os/unix/ngx_aio_write_chain.c | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/src/os/unix/ngx_aio_write_chain.c b/src/os/unix/ngx_aio_write_chain.c new file mode 100644 index 000000000..34c4f4016 --- /dev/null +++ b/src/os/unix/ngx_aio_write_chain.c @@ -0,0 +1,92 @@ + +#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; +} |