Raise RLIMIT_AS to max allowable, so that we can create the large mappings

we need to.  If the hard limit is set to low, then things will fail as
large mmaps fail.

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@2299

diff --git a/coregrind/stage1.c b/coregrind/stage1.c
index b73c32e0d249754c1e37650d54659be95f454205..c11a174596437ec70d92715ff1d24f2b358de392 100644 (file)
--- a/coregrind/stage1.c
+++ b/coregrind/stage1.c
@@ -38,6 +38,7 @@
 #include <signal.h>
 #include <fcntl.h>
 #include <errno.h>
+#include <sys/resource.h>
 
 #include "vg_include.h"
 
@@ -196,6 +197,7 @@ static void hoops(void)
 
 int main(int argc, char **argv)
 {
+   struct rlimit rlim;
    const char *cp = getenv(VALGRINDLIB);
 
    if (cp != NULL)
@@ -205,6 +207,12 @@ int main(int argc, char **argv)
 
    our_argc = argc;
 
+   /* Set the address space limit as high as it will go, since we make
+      a lot of very large mappings. */
+   getrlimit(RLIMIT_AS, &rlim);
+   rlim.rlim_cur = rlim.rlim_max;
+   setrlimit(RLIMIT_AS, &rlim);
+
    /* move onto another stack so we can play with the main one */
    ume_go((addr_t)hoops, (addr_t)stack + sizeof(stack));
 }