1.1 --- a/src/os/linux/vm/os_linux.cpp Thu Aug 01 03:44:03 2019 +0100
1.2 +++ b/src/os/linux/vm/os_linux.cpp Mon Aug 12 18:30:40 2019 +0300
1.3 @@ -2146,6 +2146,41 @@
1.4 }
1.5 }
1.6
1.7 +int os::get_loaded_modules_info(os::LoadedModulesCallbackFunc callback, void *param) {
1.8 + FILE *procmapsFile = NULL;
1.9 +
1.10 + // Open the procfs maps file for the current process
1.11 + if ((procmapsFile = fopen("/proc/self/maps", "r")) != NULL) {
1.12 + // Allocate PATH_MAX for file name plus a reasonable size for other fields.
1.13 + char line[PATH_MAX + 100];
1.14 +
1.15 + // Read line by line from 'file'
1.16 + while (fgets(line, sizeof(line), procmapsFile) != NULL) {
1.17 + u8 base, top, offset, inode;
1.18 + char permissions[5];
1.19 + char device[6];
1.20 + char name[PATH_MAX + 1];
1.21 +
1.22 + // Parse fields from line
1.23 + sscanf(line, UINT64_FORMAT_X "-" UINT64_FORMAT_X " %4s " UINT64_FORMAT_X " %5s " INT64_FORMAT " %s",
1.24 + &base, &top, permissions, &offset, device, &inode, name);
1.25 +
1.26 + // Filter by device id '00:00' so that we only get file system mapped files.
1.27 + if (strcmp(device, "00:00") != 0) {
1.28 +
1.29 + // Call callback with the fields of interest
1.30 + if(callback(name, (address)base, (address)top, param)) {
1.31 + // Oops abort, callback aborted
1.32 + fclose(procmapsFile);
1.33 + return 1;
1.34 + }
1.35 + }
1.36 + }
1.37 + fclose(procmapsFile);
1.38 + }
1.39 + return 0;
1.40 +}
1.41 +
1.42 void os::print_os_info_brief(outputStream* st) {
1.43 os::Linux::print_distro_info(st);
1.44
1.45 @@ -4030,6 +4065,10 @@
1.46 return ::read(fd, buf, nBytes);
1.47 }
1.48
1.49 +size_t os::read_at(int fd, void *buf, unsigned int nBytes, jlong offset) {
1.50 + return ::pread(fd, buf, nBytes, offset);
1.51 +}
1.52 +
1.53 // TODO-FIXME: reconcile Solaris' os::sleep with the linux variation.
1.54 // Solaris uses poll(), linux uses park().
1.55 // Poll() is likely a better choice, assuming that Thread.interrupt()
