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8056242: Add function to return structured information about loaded libraries

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Return structured information about loaded libraries.

Reviewed-by: sla, dsamersoff
This commit is contained in:
Fredrik Arvidsson 2014-09-03 14:43:49 +02:00 • committed by Staffan Larsen
parent 88eb5fb4d6
commit 07001d0332
5 changed files with 169 additions and 163 deletions
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34
hotspot/src/os/linux/vm/os_linux.cpp
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@ -2120,6 +2120,40 @@ void os::print_dll_info(outputStream *st) {
}
}
int os::get_loaded_modules_info(os::LoadedModulesCallbackFunc callback, void *param) {
FILE *procmapsFile = NULL;
// Open the procfs maps file for the current process
if ((procmapsFile = fopen("/proc/self/maps", "r")) != NULL) {
// Allocate PATH_MAX for file name plus a reasonable size for other fields.
char line[PATH_MAX + 100];
// Read line by line from 'file'
while (fgets(line, sizeof(line), procmapsFile) != NULL) {
u8 base, top, offset, inode;
char permissions[5];
char device[6];
char name[PATH_MAX + 1];
// Parse fields from line
sscanf(line, "%lx-%lx %4s %lx %5s %ld %s", &base, &top, permissions, &offset, device, &inode, name);
// Filter by device id '00:00' so that we only get file system mapped files.
if (strcmp(device, "00:00") != 0) {
// Call callback with the fields of interest
if(callback(name, (address)base, (address)top, param)) {
// Oops abort, callback aborted
fclose(procmapsFile);
return 1;
}
}
}
fclose(procmapsFile);
}
return 0;
}
void os::print_os_info_brief(outputStream* st) {
os::Linux::print_distro_info(st);