2006-07-04 Andreas Tobler <a.tobler@schweiz.ch>

[pf3gnuchains/gcc-fork.git] / libjava / posix.cc

diff --git a/libjava/posix.cc b/libjava/posix.cc
index 6b0ea8c..d191d8e 100644 (file)
--- a/libjava/posix.cc
+++ b/libjava/posix.cc
@@ -1,6 +1,6 @@
 // posix.cc -- Helper functions for POSIX-flavored OSs.
 
-/* Copyright (C) 2000, 2001, 2002  Free Software Foundation
+/* Copyright (C) 2000, 2001, 2002, 2006  Free Software Foundation
 
    This file is part of libgcj.
 
@@ -12,17 +12,42 @@ details.  */
 
 #include "posix.h"
 
+#include <stdlib.h>
 #include <errno.h>
 #include <signal.h>
+#include <stdio.h>
+
+#ifdef HAVE_DLFCN_H
+#include <dlfcn.h>
+#endif
 
 #include <jvm.h>
+#include <java-stack.h>
 #include <java/lang/Thread.h>
 #include <java/io/InterruptedIOException.h>
+#include <java/util/Properties.h>
 
 #if defined (ECOS)
 extern "C" unsigned long long _clock (void);
 #endif
 
+#if defined(HAVE_PROC_SELF_EXE)
+static char exec_name[20];
+  // initialized in _Jv_platform_initialize()
+#endif
+
+const char *_Jv_ThisExecutable (void)
+{
+#if defined(DISABLE_MAIN_ARGS)
+  return "[Embedded App]";
+#elif defined(HAVE_PROC_SELF_EXE)
+  return exec_name;
+    // initialized in _Jv_platform_initialize()
+#else
+  return _Jv_GetSafeArg (0);
+#endif
+}
+
 // gettimeofday implementation.
 jlong
 _Jv_platform_gettimeofday ()
@@ -46,6 +71,30 @@ _Jv_platform_gettimeofday ()
 #endif
 }
 
+jlong
+_Jv_platform_nanotime ()
+{
+#ifdef HAVE_CLOCK_GETTIME
+  struct timespec now;
+  clockid_t id;
+#ifdef CLOCK_MONOTONIC
+  id = CLOCK_MONOTONIC;
+#elif defined (CLOCK_HIGHRES)
+  id = CLOCK_HIGHRES;
+#else
+  id = CLOCK_REALTIME;
+#endif
+  if (clock_gettime (id, &now) == 0)
+    {
+      jlong result = (jlong) now.tv_sec;
+      result = result * 1000 * 1000 + now.tv_nsec;
+      return result;
+    }
+  // clock_gettime failed, but we can fall through.
+#endif // HAVE_CLOCK_GETTIME
+  return _Jv_platform_gettimeofday () * 1000LL;
+}
+
 // Platform-specific VM initialization.
 void
 _Jv_platform_initialize (void)
@@ -60,6 +109,28 @@ _Jv_platform_initialize (void)
 #else
   signal (SIGPIPE, SIG_IGN);
 #endif
+
+#if defined (HAVE_PROC_SELF_EXE)
+  // Compute our executable name
+  sprintf (exec_name, "/proc/%d/exe", getpid ());
+#endif
+}
+
+// Set platform-specific System properties.
+void
+_Jv_platform_initProperties (java::util::Properties* newprops)
+{
+  // A convenience define.
+#define SET(Prop,Val) \
+  newprops->put(JvNewStringLatin1 (Prop), JvNewStringLatin1 (Val))
+
+  SET ("file.separator", "/");
+  SET ("path.separator", ":");
+  SET ("line.separator", "\n");
+  const char *tmpdir = ::getenv("TMPDIR");
+  if (! tmpdir)
+    tmpdir = "/tmp";
+  SET ("java.io.tmpdir", tmpdir);
 }
 
 static inline void
@@ -137,3 +208,31 @@ _Jv_select (int n, fd_set *readfds, fd_set  *writefds,
   return 0;
 #endif
 }
+
+// Given an address, find the object that defines it and the nearest
+// defined symbol to that address.  Returns 0 if no object defines this
+// address.
+int
+_Jv_platform_dladdr (void *addr, _Jv_AddrInfo *info)
+{
+  int ret_val = 0;
+
+#if defined (HAVE_DLFCN_H) && defined (HAVE_DLADDR)
+  Dl_info addr_info;
+  ret_val = dladdr (addr, &addr_info);
+  if (ret_val != 0)
+    {
+      info->file_name = addr_info.dli_fname;
+      info->base = addr_info.dli_fbase;
+      info->sym_name = addr_info.dli_sname;
+      info->sym_addr = addr_info.dli_saddr;
+    }
+#else
+  info->file_name = NULL;
+  info->base = NULL;
+  info->sym_name = NULL;
+  info->sym_addr = NULL;
+#endif
+
+  return ret_val;
+}