8069030: support new PTRACE_GETREGSET
Summary: use PTRACE_GETREGSET if other options are not available
Reviewed-by: sla, dholmes
--- a/hotspot/agent/src/os/linux/ps_proc.c Mon Feb 02 14:35:24 2015 +0000
+++ b/hotspot/agent/src/os/linux/ps_proc.c Mon Feb 02 23:26:33 2015 -0500
@@ -27,9 +27,11 @@
#include <string.h>
#include <signal.h>
#include <errno.h>
+#include <elf.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/ptrace.h>
+#include <sys/uio.h>
#include "libproc_impl.h"
#if defined(x86_64) && !defined(amd64)
@@ -138,6 +140,15 @@
return false;
}
return true;
+#elif defined(PTRACE_GETREGSET)
+ struct iovec iov;
+ iov.iov_base = user;
+ iov.iov_len = sizeof(*user);
+ if (ptrace(PTRACE_GETREGSET, pid, NT_PRSTATUS, (void*) &iov) < 0) {
+ print_debug("ptrace(PTRACE_GETREGSET, ...) failed for lwp %d\n", pid);
+ return false;
+ }
+ return true;
#else
print_debug("ptrace(PTRACE_GETREGS, ...) not supported\n");
return false;