1 /* state.c -- Create the backtrace state. 2 Copyright (C) 2012-2018 Free Software Foundation, Inc. 3 Written by Ian Lance Taylor, Google. 4 5 Redistribution and use in source and binary forms, with or without 6 modification, are permitted provided that the following conditions are 7 met: 8 9 (1) Redistributions of source code must retain the above copyright 10 notice, this list of conditions and the following disclaimer. 11 12 (2) Redistributions in binary form must reproduce the above copyright 13 notice, this list of conditions and the following disclaimer in 14 the documentation and/or other materials provided with the 15 distribution. 16 17 (3) The name of the author may not be used to 18 endorse or promote products derived from this software without 19 specific prior written permission. 20 21 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 23 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 24 DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 25 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 26 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 27 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 29 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 30 IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 POSSIBILITY OF SUCH DAMAGE. */ 32 33 #include "config.h" 34 35 #include <string.h> 36 #include <sys/types.h> 37 38 #include "backtrace.h" 39 #include "backtrace-supported.h" 40 #include "internal.h" 41 42 /* Create the backtrace state. This will then be passed to all the 43 other routines. */ 44 45 struct backtrace_state * 46 backtrace_create_state (const char *filename, int threaded, 47 backtrace_error_callback error_callback, 48 void *data) 49 { 50 struct backtrace_state init_state; 51 struct backtrace_state *state; 52 53 #ifndef HAVE_SYNC_FUNCTIONS 54 if (threaded) 55 { 56 error_callback (data, "backtrace library does not support threads", 0); 57 return NULL; 58 } 59 #endif 60 61 memset (&init_state, 0, sizeof init_state); 62 init_state.filename = filename; 63 init_state.threaded = threaded; 64 65 state = ((struct backtrace_state *) 66 backtrace_alloc (&init_state, sizeof *state, error_callback, data)); 67 if (state == NULL) 68 return NULL; 69 *state = init_state; 70 71 return state; 72 } 73