| 1 | /* state.c -- Create the backtrace state. |
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| 2 | Copyright (C) 2012-2025 Free Software Foundation, Inc. |
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| 3 | Written by Ian Lance Taylor, Google. |
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| 4 | |
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| 5 | Redistribution and use in source and binary forms, with or without |
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| 6 | modification, are permitted provided that the following conditions are |
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| 7 | met: |
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| 8 | |
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| 9 | (1) Redistributions of source code must retain the above copyright |
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| 10 | notice, this list of conditions and the following disclaimer. |
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| 11 | |
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| 12 | (2) Redistributions in binary form must reproduce the above copyright |
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| 13 | notice, this list of conditions and the following disclaimer in |
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| 14 | the documentation and/or other materials provided with the |
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| 15 | distribution. |
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| 16 | |
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| 17 | (3) The name of the author may not be used to |
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| 18 | endorse or promote products derived from this software without |
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| 19 | specific prior written permission. |
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| 20 | |
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| 21 | THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 22 | IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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| 23 | WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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| 24 | DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, |
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| 25 | INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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| 26 | (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
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| 27 | SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 28 | HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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| 29 | STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
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| 30 | IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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| 31 | POSSIBILITY OF SUCH DAMAGE. */ |
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| 32 | |
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| 33 | #include "config.h" |
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| 34 | |
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| 35 | #include <string.h> |
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| 36 | #include <sys/types.h> |
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| 37 | |
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| 38 | #include "backtrace.h" |
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| 39 | #include "backtrace-supported.h" |
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| 40 | #include "internal.h" |
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| 41 | |
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| 42 | /* Create the backtrace state. This will then be passed to all the |
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| 43 | other routines. */ |
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| 44 | |
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| 45 | struct backtrace_state * |
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| 46 | backtrace_create_state (const char *filename, int threaded, |
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| 47 | backtrace_error_callback error_callback, |
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| 48 | void *data) |
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| 49 | { |
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| 50 | struct backtrace_state init_state; |
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| 51 | struct backtrace_state *state; |
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| 52 | |
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| 53 | #ifndef HAVE_SYNC_FUNCTIONS |
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| 54 | if (threaded) |
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| 55 | { |
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| 56 | error_callback (data, "backtrace library does not support threads" , 0); |
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| 57 | return NULL; |
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| 58 | } |
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| 59 | #endif |
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| 60 | |
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| 61 | memset (s: &init_state, c: 0, n: sizeof init_state); |
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| 62 | init_state.filename = filename; |
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| 63 | init_state.threaded = threaded; |
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| 64 | |
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| 65 | state = ((struct backtrace_state *) |
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| 66 | backtrace_alloc (state: &init_state, size: sizeof *state, error_callback, data)); |
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| 67 | if (state == NULL) |
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| 68 | return NULL; |
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| 69 | *state = init_state; |
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| 70 | |
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| 71 | return state; |
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| 72 | } |
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| 73 | |
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