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mghttpd: Add stack size and scheduling options

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This commit is contained in:
Christian Mauderer
2012-06-28 15:03:15 +02:00
committed by Sebastian Huber
parent ea008e2d0d
commit 54da7c3e55
2 changed files with 66 additions and 0 deletions
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12
cpukit/mghttpd/mongoose.1
View File

@@ -143,6 +143,18 @@ will serve all URLs that start with "/config" from the "/etc" directory, and
call handle_doc.cgi script for .doc and .rtf file requests. If some pattern
matches, no further matching/substitution is performed
(first matching pattern wins). Use full paths in substitutions. Default: ""
.It Fl x Ar thread_stack_size
Use the given amount of stack for each thread. Default: ""
.It Fl y Ar thread_priority
Use the given priority for all posix threads. If this option is used without the
thread_policy option, the systems default scheduling policy will be used for the
threads instead of inheriting the policy of the creating thread. Default: ""
.It Fl z Ar thread_policy
Select the posix scheduling policy for the threads. Possible Values are 's' for
sporadic (not on all systems available), 'r' for round robin, 'f' for fifo or
'o' for other scheduling strategie. If this option is used without the
thread_priority option, the systems default priority will be used for the
threads instead of inheriting the priority of the creating thread. Default: ""
.El
.Pp
.Sh EMBEDDING

54
cpukit/mghttpd/mongoose.c
View File

@@ -424,6 +424,7 @@ enum {
ENABLE_KEEP_ALIVE, ACCESS_CONTROL_LIST, MAX_REQUEST_SIZE,
EXTRA_MIME_TYPES, LISTENING_PORTS,
DOCUMENT_ROOT, SSL_CERTIFICATE, NUM_THREADS, RUN_AS_USER, REWRITE,
THREAD_STACK_SIZE, THREAD_PRIORITY, THREAD_POLICY,
NUM_OPTIONS
};
@@ -451,6 +452,9 @@ static const char *config_options[] = {
"t", "num_threads", "10",
"u", "run_as_user", NULL,
"w", "url_rewrite_patterns", NULL,
"x", "thread_stack_size", NULL,
"y", "thread_priority", NULL,
"z", "thread_policy", NULL,
NULL
};
#define ENTRIES_PER_CONFIG_OPTION 3
@@ -1277,12 +1281,62 @@ static int start_thread(struct mg_context *ctx, mg_thread_func_t func,
pthread_t thread_id;
pthread_attr_t attr;
int retval;
char* stacksize = ctx->config[THREAD_STACK_SIZE];
char* priority = ctx->config[THREAD_PRIORITY];
char* policy = ctx->config[THREAD_POLICY];
int noinheritsched = 0;
(void) pthread_attr_init(&attr);
(void) pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
// TODO(lsm): figure out why mongoose dies on Linux if next line is enabled
// (void) pthread_attr_setstacksize(&attr, sizeof(struct mg_connection) * 5);
if (stacksize != NULL) {
size_t size = atoi(stacksize);
(void) pthread_attr_setstacksize(&attr, size);
}
if (priority != NULL) {
struct sched_param sched_param;
memset(&sched_param, 0, sizeof(sched_param));
sched_param.sched_priority = atoi(priority);
(void) pthread_attr_setschedparam(&attr, &sched_param);
noinheritsched = 1;
}
if (policy != NULL) {
int p_policy;
(void) pthread_attr_getschedpolicy(&attr, &p_policy);
switch (policy[0]) {
case 'o':
p_policy = SCHED_OTHER;
break;
case 'f':
p_policy = SCHED_FIFO;
break;
case 'r':
p_policy = SCHED_RR;
break;
#if defined(_POSIX_SPORADIC_SERVER) || defined(_POSIX_THREAD_SPORADIC_SERVER)
case 's':
p_policy = SCHED_SPORADIC;
break;
#endif
default:
cry(fc(ctx), "%s: Unknown scheduler: %s", __func__, policy);
break;
}
(void) pthread_attr_setschedpolicy(&attr, p_policy);
noinheritsched = 1;
}
if (noinheritsched != 0) {
(void) pthread_attr_setinheritsched(&attr, PTHREAD_EXPLICIT_SCHED);
}
if ((retval = pthread_create(&thread_id, &attr, func, param)) != 0) {
cry(fc(ctx), "%s: %s", __func__, strerror(retval));
}