Mercurial > hg > nginx
view src/http/ngx_http_write_filter.c @ 4:c5f071d376e5
nginx-0.0.1-2002-08-22-19:24:03 import
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Thu, 22 Aug 2002 15:24:03 +0000 |
parents | 34a521b1a148 |
children | 708f8bb772ec |
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#include <ngx_config.h> #include <ngx_hunk.h> #include <ngx_http.h> #include <ngx_http_filter.h> #include <ngx_event_write.h> #include <ngx_http_write_filter.h> ngx_http_module_t ngx_http_write_filter_module; /* STUB */ static ngx_http_write_filter_ctx_t module_ctx; void ngx_http_write_filter_init() { module_ctx.buffer_output = 10240; module_ctx.out = NULL; ngx_http_write_filter_module.ctx = &module_ctx; } /* */ int ngx_http_write_filter(ngx_http_request_t *r, ngx_chain_t *in) { int last; off_t size, flush; ngx_chain_t *ch, **prev, *chain; ngx_http_write_filter_ctx_t *ctx; ctx = (ngx_http_write_filter_ctx_t *) ngx_get_module_ctx(r->main ? r->main : r, &ngx_http_write_filter_module); size = flush = 0; last = 0; prev = &ctx->out; /* find size, flush point and last link of saved chain */ for (ch = ctx->out; ch; ch = ch->next) { prev = &ch->next; size += ch->hunk->last.file - ch->hunk->pos.file; ngx_log_debug(r->connection->log, "old chunk: %x " QX_FMT " " QD_FMT _ ch->hunk->type _ ch->hunk->pos.file _ ch->hunk->last.file - ch->hunk->pos.file); if (ch->hunk->type & NGX_HUNK_FLUSH) flush = size; if (ch->hunk->type & NGX_HUNK_LAST) last = 1; } /* add new chain to existent one */ for (/* void */; in; in = in->next) { ngx_test_null(ch, ngx_palloc(r->pool, sizeof(ngx_chain_t)), NGX_ERROR); ch->hunk = in->hunk; ch->next = NULL; *prev = ch; prev = &ch->next; size += ch->hunk->last.file - ch->hunk->pos.file; ngx_log_debug(r->connection->log, "new chunk: %x " QX_FMT " " QD_FMT _ ch->hunk->type _ ch->hunk->pos.file _ ch->hunk->last.file - ch->hunk->pos.file); if (ch->hunk->type & NGX_HUNK_FLUSH) flush = size; if (ch->hunk->type & NGX_HUNK_LAST) last = 1; } if (!last && flush == 0 && size < ctx->buffer_output) return NGX_OK; chain = ngx_event_write(r->connection, ctx->out, flush); if (chain == (ngx_chain_t *) -1) return NGX_ERROR; ctx->out = chain; return (chain ? NGX_AGAIN : NGX_OK); }