f5c5a4e915
* include/name-finder.h (_Jv_name_finder::myclose): New method. * name-finder.cc (_Jv_name_finder): Initialize file descriptors. From-SVN: r51234
92 lines
2.0 KiB
C++
92 lines
2.0 KiB
C++
// name-finder.h - Convert addresses to names
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/* Copyright (C) 2000, 2002 Free Software Foundation, Inc
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This file is part of libgcj.
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This software is copyrighted work licensed under the terms of the
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Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
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details. */
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/**
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* @author Andrew Haley <aph@cygnus.com>
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* @date Jan 6 2000
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*/
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#include <gcj/cni.h>
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#include <jvm.h>
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#include <sys/types.h>
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#ifdef HAVE_SYS_WAIT_H
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#include <sys/wait.h>
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#endif
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#include <string.h>
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#include <stdio.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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/* _Jv_name_finder is a class wrapper around a mechanism that can
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convert addresses of methods to their names and the names of files
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in which they appear. */
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class _Jv_name_finder
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{
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public:
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_Jv_name_finder (char *executable);
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~_Jv_name_finder ()
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{
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#if defined (HAVE_PIPE) && defined (HAVE_FORK)
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myclose (f_pipe[0]);
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myclose (f_pipe[1]);
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myclose (b_pipe[0]);
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myclose (b_pipe[1]);
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if (b_pipe_fd != NULL)
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fclose (b_pipe_fd);
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if (pid >= 0)
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{
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int wstat;
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// We don't care about errors here.
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waitpid (pid, &wstat, 0);
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}
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#endif
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}
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/* Given a pointer to a function or method, try to convert it into a
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name and the appropriate line and source file. The caller passes
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the code pointer in p.
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Returns false if the lookup fails. Even if this happens, the field
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hex will have been correctly filled in with the pointer.
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The other fields are method_name and file_name, which lookup will
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attempt to fill appropriately. If the lookup has failed, these
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fields contain garbage.*/
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bool lookup (void *p);
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char method_name[1024];
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char file_name[1024];
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char hex[sizeof (void *) * 2 + 5];
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private:
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void toHex (void *p);
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#if defined (HAVE_PIPE) && defined (HAVE_FORK)
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pid_t pid;
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int f_pipe[2], b_pipe[2];
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FILE *b_pipe_fd;
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int error;
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// Close a descriptor only if it has not been closed.
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void myclose (int fd)
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{
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if (fd != -1)
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close (fd);
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}
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#endif
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};
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