Hi. I and co-worker use jstack for various trouble shooting.
We mainly use Java on Linux with AMD64 architecture. However, jstack -F option doesn't work our platform. I ran jstack -F with LIBSAPROC_DEBUG=1 (environment variable), I got following messages: /***************/ Thread 31933: (state = BLOCKED) libsaproc DEBUG: ptrace(PTRACE_GETREGS, ...) not supported Error occurred during stack walking: sun.jvm.hotspot.debugger.DebuggerException: sun.jvm.hotspot.debugger.DebuggerException: get_thread_regs failed for a lwp /***************/ In order to fix this problem, I made a patch for preprocessor macro in "agent/src/os/linux/ps_proc.c" . The patch that attached this mail works well on Fedora 13 x86_64. Please merge this patch if you don't fix this problem yet. Best regards.
--- a/agent/src/os/linux/ps_proc.c 2010-11-12 05:43:12.000000000 +0900 +++ b/agent/src/os/linux/ps_proc.c 2010-11-15 13:11:35.280037045 +0900 @@ -124,6 +124,8 @@ #ifdef _LP64 #ifdef PTRACE_GETREGS64 #define PTRACE_GETREGS_REQ PTRACE_GETREGS64 +#elif defined(__linux__) +#define PTRACE_GETREGS_REQ PTRACE_GETREGS #endif #else #if defined(PTRACE_GETREGS) || defined(PT_GETREGS)
