1.1 --- a/src/os/bsd/vm/os_bsd.cpp Mon Jun 10 11:30:51 2013 +0200
1.2 +++ b/src/os/bsd/vm/os_bsd.cpp Thu Jun 13 11:16:38 2013 -0700
1.3 @@ -2074,6 +2074,13 @@
1.4 }
1.5 }
1.6
1.7 +static void warn_fail_commit_memory(char* addr, size_t size, bool exec,
1.8 + int err) {
1.9 + warning("INFO: os::commit_memory(" PTR_FORMAT ", " SIZE_FORMAT
1.10 + ", %d) failed; error='%s' (errno=%d)", addr, size, exec,
1.11 + strerror(err), err);
1.12 +}
1.13 +
1.14 // NOTE: Bsd kernel does not really reserve the pages for us.
1.15 // All it does is to check if there are enough free pages
1.16 // left at the time of mmap(). This could be a potential
1.17 @@ -2082,18 +2089,45 @@
1.18 int prot = exec ? PROT_READ|PROT_WRITE|PROT_EXEC : PROT_READ|PROT_WRITE;
1.19 #ifdef __OpenBSD__
1.20 // XXX: Work-around mmap/MAP_FIXED bug temporarily on OpenBSD
1.21 - return ::mprotect(addr, size, prot) == 0;
1.22 + if (::mprotect(addr, size, prot) == 0) {
1.23 + return true;
1.24 + }
1.25 #else
1.26 uintptr_t res = (uintptr_t) ::mmap(addr, size, prot,
1.27 MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0);
1.28 - return res != (uintptr_t) MAP_FAILED;
1.29 + if (res != (uintptr_t) MAP_FAILED) {
1.30 + return true;
1.31 + }
1.32 #endif
1.33 +
1.34 + // Warn about any commit errors we see in non-product builds just
1.35 + // in case mmap() doesn't work as described on the man page.
1.36 + NOT_PRODUCT(warn_fail_commit_memory(addr, size, exec, errno);)
1.37 +
1.38 + return false;
1.39 }
1.40
1.41 -
1.42 bool os::pd_commit_memory(char* addr, size_t size, size_t alignment_hint,
1.43 bool exec) {
1.44 - return commit_memory(addr, size, exec);
1.45 + // alignment_hint is ignored on this OS
1.46 + return pd_commit_memory(addr, size, exec);
1.47 +}
1.48 +
1.49 +void os::pd_commit_memory_or_exit(char* addr, size_t size, bool exec,
1.50 + const char* mesg) {
1.51 + assert(mesg != NULL, "mesg must be specified");
1.52 + if (!pd_commit_memory(addr, size, exec)) {
1.53 + // add extra info in product mode for vm_exit_out_of_memory():
1.54 + PRODUCT_ONLY(warn_fail_commit_memory(addr, size, exec, errno);)
1.55 + vm_exit_out_of_memory(size, OOM_MMAP_ERROR, mesg);
1.56 + }
1.57 +}
1.58 +
1.59 +void os::pd_commit_memory_or_exit(char* addr, size_t size,
1.60 + size_t alignment_hint, bool exec,
1.61 + const char* mesg) {
1.62 + // alignment_hint is ignored on this OS
1.63 + pd_commit_memory_or_exit(addr, size, exec, mesg);
1.64 }
1.65
1.66 void os::pd_realign_memory(char *addr, size_t bytes, size_t alignment_hint) {
1.67 @@ -2148,7 +2182,7 @@
1.68 }
1.69
1.70 bool os::pd_create_stack_guard_pages(char* addr, size_t size) {
1.71 - return os::commit_memory(addr, size);
1.72 + return os::commit_memory(addr, size, !ExecMem);
1.73 }
1.74
1.75 // If this is a growable mapping, remove the guard pages entirely by
1.76 @@ -3512,7 +3546,7 @@
1.77
1.78 if (!UseMembar) {
1.79 address mem_serialize_page = (address) ::mmap(NULL, Bsd::page_size(), PROT_READ | PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
1.80 - guarantee( mem_serialize_page != NULL, "mmap Failed for memory serialize page");
1.81 + guarantee( mem_serialize_page != MAP_FAILED, "mmap Failed for memory serialize page");
1.82 os::set_memory_serialize_page( mem_serialize_page );
1.83
1.84 #ifndef PRODUCT
