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use usec and pid as start value

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This commit is contained in:
Igor Sysoev 2007-11-24 10:43:15 +00:00
parent 53fcff1efe
commit b50b32e255
1 changed files with 20 additions and 3 deletions
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23
src/http/modules/ngx_http_userid_filter_module.c
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@ -61,9 +61,11 @@ static char *ngx_http_userid_expires(ngx_conf_t *cf, ngx_command_t *cmd,
static char *ngx_http_userid_p3p(ngx_conf_t *cf, void *post, void *data);
static char *ngx_http_userid_mark(ngx_conf_t *cf, ngx_command_t *cmd,
void *conf);
static ngx_int_t ngx_http_userid_init_worker(ngx_cycle_t *cycle);
static uint32_t start_value;
static uint32_t sequencer_v1 = 1;
static uint32_t sequencer_v2 = 0x03030302;
@ -173,7 +175,7 @@ ngx_module_t ngx_http_userid_filter_module = {
NGX_HTTP_MODULE, /* module type */
NULL, /* init master */
NULL, /* init module */
NULL, /* init process */
ngx_http_userid_init_worker, /* init process */
NULL, /* init thread */
NULL, /* exit thread */
NULL, /* exit process */
@ -319,7 +321,7 @@ ngx_http_userid_set_uid(ngx_http_request_t *r, ngx_http_userid_ctx_t *ctx,
ctx->uid_set[0] = conf->service;
}
ctx->uid_set[1] = (uint32_t) ngx_time();
ctx->uid_set[2] = ngx_pid;
ctx->uid_set[2] = start_value;
ctx->uid_set[3] = sequencer_v1;
sequencer_v1 += 0x100;
@ -346,7 +348,7 @@ ngx_http_userid_set_uid(ngx_http_request_t *r, ngx_http_userid_ctx_t *ctx,
}
ctx->uid_set[1] = htonl((uint32_t) ngx_time());
ctx->uid_set[2] = htonl(ngx_pid);
ctx->uid_set[2] = htonl(start_value);
ctx->uid_set[3] = htonl(sequencer_v2);
sequencer_v2 += 0x100;
if (sequencer_v2 < 0x03030302) {
@ -706,3 +708,18 @@ ngx_http_userid_mark(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
return NGX_CONF_OK;
}
static ngx_int_t
ngx_http_userid_init_worker(ngx_cycle_t *cycle)
{
struct timeval tp;
ngx_gettimeofday(&tp);
/* use the most significant usec part that fits to 16 bits */
start_value = ((tp.tv_usec / 20) << 16) | ngx_pid;
return NGX_OK;
}