Mercurial > hg > graal-jvmci-8

comparison src/os/linux/vm/os_linux.cpp @ 242:d95b224e9f17

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
6721093: -XX:AppendRatio=N not supported Summary: Add mechanism to ignore unsupported flags for a set period of time Reviewed-by: acorn, never, coleenp
author kamg
date Mon, 28 Jul 2008 14:07:44 -0400
parents 1fdb98a17101
children b7f01ad69d30
comparison
equal deleted inserted replaced
237:1fdb98a17101 242:d95b224e9f17
91 /* Signal number used to suspend/resume a thread */ 91 /* Signal number used to suspend/resume a thread */
92 92
93 /* do not use any signal number less than SIGSEGV, see 4355769 */ 93 /* do not use any signal number less than SIGSEGV, see 4355769 */
94 static int SR_signum = SIGUSR2; 94 static int SR_signum = SIGUSR2;
95 sigset_t SR_sigset; 95 sigset_t SR_sigset;
96
97 /* Used to protect dlsym() calls */
98 static pthread_mutex_t dl_mutex;
96 99
97 //////////////////////////////////////////////////////////////////////////////// 100 ////////////////////////////////////////////////////////////////////////////////
98 // utility functions 101 // utility functions
99 102
100 static int SR_initialize(); 103 static int SR_initialize();
1491 1494
1492 const char* os::dll_file_extension() { return ".so"; } 1495 const char* os::dll_file_extension() { return ".so"; }
1493 1496
1494 const char* os::get_temp_directory() { return "/tmp/"; } 1497 const char* os::get_temp_directory() { return "/tmp/"; }
1495 1498
1499 void os::dll_build_name(
1500 char* buffer, size_t buflen, const char* pname, const char* fname) {
1501 // copied from libhpi
1502 const size_t pnamelen = pname ? strlen(pname) : 0;
1503
1504 /* Quietly truncate on buffer overflow. Should be an error. */
1505 if (pnamelen + strlen(fname) + 10 > (size_t) buflen) {
1506 *buffer = '\0';
1507 return;
1508 }
1509
1510 if (pnamelen == 0) {
1511 sprintf(buffer, "lib%s.so", fname);
1512 } else {
1513 sprintf(buffer, "%s/lib%s.so", pname, fname);
1514 }
1515 }
1516
1496 const char* os::get_current_directory(char *buf, int buflen) { 1517 const char* os::get_current_directory(char *buf, int buflen) {
1497 return getcwd(buf, buflen); 1518 return getcwd(buf, buflen);
1498 } 1519 }
1499 1520
1500 // check if addr is inside libjvm[_g].so 1521 // check if addr is inside libjvm[_g].so
1740 } 1761 }
1741 1762
1742 return NULL; 1763 return NULL;
1743 } 1764 }
1744 1765
1745 1766 /*
1767 * glibc-2.0 libdl is not MT safe. If you are building with any glibc,
1768 * chances are you might want to run the generated bits against glibc-2.0
1769 * libdl.so, so always use locking for any version of glibc.
1770 */
1771 void* os::dll_lookup(void* handle, const char* name) {
1772 pthread_mutex_lock(&dl_mutex);
1773 void* res = dlsym(handle, name);
1774 pthread_mutex_unlock(&dl_mutex);
1775 return res;
1776 }
1746 1777
1747 1778
1748 bool _print_ascii_file(const char* filename, outputStream* st) { 1779 bool _print_ascii_file(const char* filename, outputStream* st) {
1749 int fd = open(filename, O_RDONLY); 1780 int fd = open(filename, O_RDONLY);
1750 if (fd == -1) { 1781 if (fd == -1) {
3579 // main_thread points to the aboriginal thread 3610 // main_thread points to the aboriginal thread
3580 Linux::_main_thread = pthread_self(); 3611 Linux::_main_thread = pthread_self();
3581 3612
3582 Linux::clock_init(); 3613 Linux::clock_init();
3583 initial_time_count = os::elapsed_counter(); 3614 initial_time_count = os::elapsed_counter();
3615 pthread_mutex_init(&dl_mutex, NULL);
3584 } 3616 }
3585 3617
3586 // To install functions for atexit system call 3618 // To install functions for atexit system call
3587 extern "C" { 3619 extern "C" {
3588 static void perfMemory_exit_helper() { 3620 static void perfMemory_exit_helper() {