database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-11-10 17:42:29 +03:00
Code Activity

Do a direct probe during postmaster startup to determine the maximum

Browse Source 
number of openable files and the number already opened.  This eliminates
depending on sysconf(_SC_OPEN_MAX), and allows much saner behavior on
platforms where open-file slots are used up by semaphores.
This commit is contained in:
Tom Lane
2004-02-23 20:45:59 +00:00
parent b4c8dcb294
commit f83356c7f5
5 changed files with 165 additions and 109 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
src/backend/postmaster/postmaster.c
View File

@@ -37,7 +37,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/postmaster/postmaster.c,v 1.367 2004/02/17 03:54:56 momjian Exp $
* $PostgreSQL: pgsql/src/backend/postmaster/postmaster.c,v 1.368 2004/02/23 20:45:59 tgl Exp $
*
* NOTES
*
@@ -839,6 +839,12 @@ PostmasterMain(int argc, char *argv[])
*/
reset_shared(PostPortNumber);
/*
* Estimate number of openable files. This must happen after setting up
* semaphores, because on some platforms semaphores count as open files.
*/
set_max_safe_fds();
/*
* Initialize the list of active backends.
*/
@@ -848,13 +854,10 @@ PostmasterMain(int argc, char *argv[])
/*
* Initialize the child pid/HANDLE arrays
*/
/* FIXME: [fork/exec] Ideally, we would resize these arrays with changes
* in MaxBackends, but this'll do as a first order solution.
*/
win32_childPIDArray = (pid_t*)malloc(NUM_BACKENDARRAY_ELEMS*sizeof(pid_t));
win32_childHNDArray = (HANDLE*)malloc(NUM_BACKENDARRAY_ELEMS*sizeof(HANDLE));
if (!win32_childPIDArray || !win32_childHNDArray)
ereport(LOG,
ereport(FATAL,
(errcode(ERRCODE_OUT_OF_MEMORY),
errmsg("out of memory")));
#endif