2072 static void _print_ascii_file_h(const char* header, const char* filename, outputStream* st) {
2073 st->print_cr("%s:", header);
2074 if (!_print_ascii_file(filename, st)) {
2075 st->print_cr("<Not Available>");
2076 }
2077 }
2078
2079 void os::print_dll_info(outputStream *st) {
2080 st->print_cr("Dynamic libraries:");
2081
2082 char fname[32];
2083 pid_t pid = os::Linux::gettid();
2084
2085 jio_snprintf(fname, sizeof(fname), "/proc/%d/maps", pid);
2086
2087 if (!_print_ascii_file(fname, st)) {
2088 st->print("Can not get library information for pid = %d\n", pid);
2089 }
2090 }
2091
2092 int os::get_loaded_modules_info(os::LoadedModulesCallbackFunc callback, void *param) {
2093 FILE *procmapsFile = NULL;
2094
2095 // Open the procfs maps file for the current process
2096 if ((procmapsFile = fopen("/proc/self/maps", "r")) != NULL) {
2097 // Allocate PATH_MAX for file name plus a reasonable size for other fields.
2098 char line[PATH_MAX + 100];
2099
2100 // Read line by line from 'file'
2101 while (fgets(line, sizeof(line), procmapsFile) != NULL) {
2102 u8 base, top, inode;
2103 char name[sizeof(line)];
2104
2105 // Parse fields from line, discard perms, offset and device
2106 int matches = sscanf(line, UINT64_FORMAT_X "-" UINT64_FORMAT_X " %*s %*s %*s " INT64_FORMAT " %s",
2107 &base, &top, &inode, name);
2108 // the last entry 'name' is empty for some entries, so we might have 3 matches instead of 4 for some lines
2109 if (matches < 3) continue;
2110 if (matches == 3) name[0] = '\0';
2111
2112 // Filter by inode 0 so that we only get file system mapped files.
2113 if (inode != 0) {
2114
2115 // Call callback with the fields of interest
2116 if(callback(name, (address)base, (address)top, param)) {
2117 // Oops abort, callback aborted
2118 fclose(procmapsFile);
2119 return 1;
2120 }
2121 }
2122 }
2123 fclose(procmapsFile);
2124 }
2125 return 0;
2126 }
2127
2128 void os::print_os_info_brief(outputStream* st) {
2129 os::Linux::print_distro_info(st);
2130
2131 os::Posix::print_uname_info(st);
2132
2133 os::Linux::print_libversion_info(st);
2134
2135 }
2136
2137 void os::print_os_info(outputStream* st) {
2138 st->print("OS:");
2139
2140 os::Linux::print_distro_info(st);
2141
2142 os::Posix::print_uname_info(st);
2143
2144 os::Linux::print_uptime_info(st);
2145
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2072 static void _print_ascii_file_h(const char* header, const char* filename, outputStream* st) {
2073 st->print_cr("%s:", header);
2074 if (!_print_ascii_file(filename, st)) {
2075 st->print_cr("<Not Available>");
2076 }
2077 }
2078
2079 void os::print_dll_info(outputStream *st) {
2080 st->print_cr("Dynamic libraries:");
2081
2082 char fname[32];
2083 pid_t pid = os::Linux::gettid();
2084
2085 jio_snprintf(fname, sizeof(fname), "/proc/%d/maps", pid);
2086
2087 if (!_print_ascii_file(fname, st)) {
2088 st->print("Can not get library information for pid = %d\n", pid);
2089 }
2090 }
2091
2092 struct loaded_modules_info_param {
2093 os::LoadedModulesCallbackFunc callback;
2094 void *param;
2095 };
2096
2097 static int dl_iterate_callback(struct dl_phdr_info *info, size_t size, void *data) {
2098 if ((info->dlpi_name == NULL) || (*info->dlpi_name == '\0')) {
2099 return 0;
2100 }
2101
2102 struct loaded_modules_info_param *callback_param = reinterpret_cast<struct loaded_modules_info_param *>(data);
2103 address base = NULL;
2104 address top = NULL;
2105 for (int idx = 0; idx < info->dlpi_phnum; idx++) {
2106 const ElfW(Phdr) *phdr = info->dlpi_phdr + idx;
2107 if (phdr->p_type == PT_LOAD) {
2108 address raw_phdr_base = reinterpret_cast<address>(info->dlpi_addr + phdr->p_vaddr);
2109
2110 address phdr_base = align_down(raw_phdr_base, phdr->p_align);
2111 if ((base == NULL) || (base > phdr_base)) {
2112 base = phdr_base;
2113 }
2114
2115 address phdr_top = align_up(raw_phdr_base + phdr->p_memsz, phdr->p_align);
2116 if ((top == NULL) || (top < phdr_top)) {
2117 top = phdr_top;
2118 }
2119 }
2120 }
2121
2122 return callback_param->callback(info->dlpi_name, base, top, callback_param->param);
2123 }
2124
2125 int os::get_loaded_modules_info(os::LoadedModulesCallbackFunc callback, void *param) {
2126 struct loaded_modules_info_param callback_param = {callback, param};
2127 return dl_iterate_phdr(&dl_iterate_callback, &callback_param);
2128 }
2129
2130 void os::print_os_info_brief(outputStream* st) {
2131 os::Linux::print_distro_info(st);
2132
2133 os::Posix::print_uname_info(st);
2134
2135 os::Linux::print_libversion_info(st);
2136
2137 }
2138
2139 void os::print_os_info(outputStream* st) {
2140 st->print("OS:");
2141
2142 os::Linux::print_distro_info(st);
2143
2144 os::Posix::print_uname_info(st);
2145
2146 os::Linux::print_uptime_info(st);
2147
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