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+/* state.c -- Create the backtrace state.
+ Copyright (C) 2012-2018 Free Software Foundation, Inc.
+ Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+ (1) Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ (2) Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in
+ the documentation and/or other materials provided with the
+ distribution.
+
+ (3) The name of the author may not be used to
+ endorse or promote products derived from this software without
+ specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE. */
+
+#include "config.h"
+
+#include <string.h>
+#include <sys/types.h>
+
+#include "backtrace.h"
+#include "backtrace-supported.h"
+#include "internal.h"
+
+/* Create the backtrace state. This will then be passed to all the
+ other routines. */
+
+struct backtrace_state *
+backtrace_create_state (const char *filename, int threaded,
+ backtrace_error_callback error_callback,
+ void *data)
+{
+ struct backtrace_state init_state;
+ struct backtrace_state *state;
+
+#ifndef HAVE_SYNC_FUNCTIONS
+ if (threaded)
+ {
+ error_callback (data, "backtrace library does not support threads", 0);
+ return NULL;
+ }
+#endif
+
+ memset (&init_state, 0, sizeof init_state);
+ init_state.filename = filename;
+ init_state.threaded = threaded;
+
+ state = ((struct backtrace_state *)
+ backtrace_alloc (&init_state, sizeof *state, error_callback, data));
+ if (state == NULL)
+ return NULL;
+ *state = init_state;
+
+ return state;
+}