1 files changed, 126 insertions, 0 deletions
diff --git a/lib/malloc/trace.c b/lib/malloc/trace.c
new file mode 100644
index 0000000..391ca9d
--- /dev/null
+++ b/lib/malloc/trace.c
@@ -0,0 +1,126 @@
+/* trace.c - tracing functions for malloc */
+
+/* Copyright (C) 2001-2020 Free Software Foundation, Inc.
+
+   This file is part of GNU Bash, the Bourne Again SHell.
+
+   Bash is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   Bash is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with Bash.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#include <stdio.h>
+#ifdef HAVE_UNISTD_H
+#  include <unistd.h>
+#endif
+
+#include "imalloc.h"
+
+extern int malloc_trace;
+
+static int _mtrace_verbose = 0;
+
+#ifdef MALLOC_TRACE
+
+extern FILE *_imalloc_fopen PARAMS((char *, char *, char *, char *, size_t));
+
+FILE *_mtrace_fp = NULL;
+extern char _malloc_trace_buckets[];
+
+void
+mtrace_alloc (tag, mem, size, file, line)
+     const char *tag;
+     PTR_T mem;
+     size_t size;
+     const char *file;
+     int line;
+{
+  if (_mtrace_fp == NULL)
+    _mtrace_fp = stderr;
+
+  if (_mtrace_verbose)
+    fprintf (_mtrace_fp, "alloc: %s: %p (%zu bytes) from '%s:%d'\n",
+		tag, mem, size, file ? file : "unknown", line);
+  else
+    fprintf (_mtrace_fp, "alloc:%p:%zu:%s:%d\n",
+		mem, size, file ? file : "unknown", line);
+}
+
+void
+mtrace_free (mem, size, file, line)
+     PTR_T mem;
+     int size;
+     const char *file;
+     int line;
+{
+  if (_mtrace_fp == NULL)
+    _mtrace_fp = stderr;
+
+  if (_mtrace_verbose)
+    fprintf (_mtrace_fp, "free: %p (%d bytes) from '%s:%d'\n",
+		mem, size, file ? file : "unknown", line);
+  else
+    fprintf (_mtrace_fp, "free:%p:%d:%s:%d\n",
+		mem, size, file ? file : "unknown", line);
+}
+#endif /* MALLOC_TRACE */
+
+int
+malloc_set_trace (n)
+     int n;
+{
+  int old;
+
+  old = malloc_trace;
+  malloc_trace = n;
+  _mtrace_verbose = (n > 1);
+  return old;
+}
+
+void
+malloc_set_tracefp (fp)
+     FILE *fp;
+{
+#ifdef MALLOC_TRACE
+  _mtrace_fp = fp ? fp : stderr;
+#endif
+}
+
+void
+malloc_trace_bin (n)
+     int n;
+{
+#ifdef MALLOC_TRACE
+  _malloc_trace_buckets[n] = 1;
+#endif
+}
+
+#define TRACEROOT "/var/tmp/maltrace/trace."
+
+void
+malloc_set_tracefn (s, fn)
+     char *s;
+     char *fn;
+{
+#ifdef MALLOC_TRACE
+  FILE *fp;
+  char defname[sizeof (TRACEROOT) + 64];
+
+  fp = _imalloc_fopen (s, fn, TRACEROOT, defname, sizeof (defname));
+  if (fp)
+    malloc_set_tracefp (fp);
+#endif
+}