Make the shared memory segment size configurable

This is useful only on systems where memory overcommit is not available
or disabled.

4 files changed, 7 insertions, 2 deletions

diff --git a/src/pulse/client-conf.c b/src/pulse/client-conf.c
index 739ef161..58d64642 100644
--- a/src/pulse/client-conf.c
+++ b/src/pulse/client-conf.c
@@ -61,6 +61,7 @@ static const pa_client_conf default_conf = {
     .disable_shm = FALSE,
     .cookie_file = NULL,
     .cookie_valid = FALSE,
+    .shm_size = 0
 };
 
 pa_client_conf *pa_client_conf_new(void) {
@@ -99,6 +100,7 @@ int pa_client_conf_load(pa_client_conf *c, const char *filename) {
         { "autospawn",              pa_config_parse_bool,    NULL },
         { "cookie-file",            pa_config_parse_string,  NULL },
         { "disable-shm",            pa_config_parse_bool,    NULL },
+        { "shm-size-bytes",         pa_config_parse_size,    NULL },
         { NULL,                     NULL,                    NULL },
     };
 
@@ -110,6 +112,7 @@ int pa_client_conf_load(pa_client_conf *c, const char *filename) {
     table[5].data = &c->autospawn;
     table[6].data = &c->cookie_file;
     table[7].data = &c->disable_shm;
+    table[8].data = &c->shm_size;
 
     if (filename) {
 
diff --git a/src/pulse/client-conf.h b/src/pulse/client-conf.h
index 699279aa..4eac467e 100644
--- a/src/pulse/client-conf.h
+++ b/src/pulse/client-conf.h
@@ -31,6 +31,7 @@ typedef struct pa_client_conf {
     pa_bool_t autospawn, disable_shm;
     uint8_t cookie[PA_NATIVE_COOKIE_LENGTH];
     pa_bool_t cookie_valid; /* non-zero, when cookie is valid */
+    size_t shm_size;
 } pa_client_conf;
 
 /* Create a new configuration data object and reset it to defaults */
diff --git a/src/pulse/client.conf.in b/src/pulse/client.conf.in
index 8339d651..579bcc20 100644
--- a/src/pulse/client.conf.in
+++ b/src/pulse/client.conf.in
@@ -30,3 +30,4 @@
 ; cookie-file =
 
 ; disable-shm = no
+; shm-size-bytes = 0 # setting this 0 will use the system-default, usually 64 MiB
diff --git a/src/pulse/context.c b/src/pulse/context.c
index 154e5faf..3145d9c8 100644
--- a/src/pulse/context.c
+++ b/src/pulse/context.c
@@ -174,10 +174,10 @@ pa_context *pa_context_new_with_proplist(pa_mainloop_api *mainloop, const char *
     pa_client_conf_load(c->conf, NULL);
     pa_client_conf_env(c->conf);
 
-    if (!(c->mempool = pa_mempool_new(!c->conf->disable_shm))) {
+    if (!(c->mempool = pa_mempool_new(!c->conf->disable_shm, c->conf->shm_size))) {
 
         if (!c->conf->disable_shm)
-            c->mempool = pa_mempool_new(FALSE);
+            c->mempool = pa_mempool_new(FALSE, c->conf->shm_size);
 
         if (!c->mempool) {
             context_free(c);