[95dab9e] | 1 | // |
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| 2 | // Cforall Version 1.0.0 Copyright (C) 2022 University of Waterloo |
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| 3 | // |
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| 4 | // The contents of this file are covered under the licence agreement in the |
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| 5 | // file "LICENCE" distributed with Cforall. |
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| 6 | // |
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| 7 | // interpose_thread.c -- |
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| 8 | // |
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| 9 | // Author : Thierry Delisle |
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| 10 | // Created On : Wed Sep 21 11:55:16 2022 |
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| 11 | // Last Modified By : |
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| 12 | // Last Modified On : |
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| 13 | // Update Count : |
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| 14 | // |
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| 15 | |
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| 16 | #include <stdarg.h> // va_start, va_end |
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| 17 | #include <stdio.h> |
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| 18 | #include <string.h> // strlen |
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| 19 | extern "C" { |
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| 20 | #include <dlfcn.h> // dlopen, dlsym |
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| 21 | #include <execinfo.h> // backtrace, messages |
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| 22 | } |
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| 23 | |
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| 24 | #include "bits/debug.hfa" |
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| 25 | #include "bits/defs.hfa" |
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| 26 | #include <assert.h> |
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| 27 | |
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| 28 | //============================================================================================= |
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| 29 | // Interposing helpers |
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| 30 | //============================================================================================= |
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| 31 | |
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| 32 | typedef void (* generic_fptr_t)(void); |
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| 33 | |
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| 34 | generic_fptr_t interpose_symbol( |
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| 35 | generic_fptr_t (*do_interpose_symbol)( void * library, const char symbol[], const char version[] ), |
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| 36 | const char symbol[], |
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| 37 | const char version[] |
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| 38 | ) libcfa_public { |
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| 39 | const char * error; |
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| 40 | |
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| 41 | static void * library; |
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| 42 | if ( ! library ) { |
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| 43 | #if defined( RTLD_NEXT ) |
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| 44 | library = RTLD_NEXT; |
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| 45 | #else |
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| 46 | // missing RTLD_NEXT => must hard-code library name, assuming libstdc++ |
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| 47 | library = dlopen( "libpthread.so", RTLD_LAZY ); |
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| 48 | error = dlerror(); |
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| 49 | if ( error ) { |
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| 50 | abort( "interpose_symbol : failed to open libpthread, %s\n", error ); |
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| 51 | } |
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| 52 | #endif |
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| 53 | } // if |
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| 54 | |
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| 55 | return do_interpose_symbol(library, symbol, version); |
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| 56 | } |
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| 57 | |
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| 58 | #define INTERPOSE( x, ver ) __cabi_libpthread.x = (typeof(__cabi_libpthread.x))interpose_symbol( do_interpose_symbol, #x, ver ) |
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| 59 | |
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| 60 | //============================================================================================= |
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| 61 | // Interposition Startup logic |
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| 62 | //============================================================================================= |
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| 63 | |
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| 64 | static struct { |
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| 65 | int (*pthread_create)(pthread_t *_thread, const pthread_attr_t *attr, void *(*start_routine) (void *), void *arg); |
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| 66 | int (*pthread_join)(pthread_t _thread, void **retval); |
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| 67 | pthread_t (*pthread_self)(void); |
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| 68 | int (*pthread_attr_init)(pthread_attr_t *attr); |
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| 69 | int (*pthread_attr_destroy)(pthread_attr_t *attr); |
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| 70 | int (*pthread_attr_setstack)( pthread_attr_t *attr, void *stackaddr, size_t stacksize ); |
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| 71 | int (*pthread_attr_getstacksize)( const pthread_attr_t *attr, size_t *stacksize ); |
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| 72 | int (*pthread_sigmask)(int how, const sigset_t *set, sigset_t *oldset); |
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| 73 | int (*pthread_sigqueue)(pthread_t _thread, int sig, const union sigval value); |
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| 74 | } __cabi_libpthread; |
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| 75 | |
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| 76 | extern "C" { |
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| 77 | void __cfathreadabi_interpose_startup( generic_fptr_t (*do_interpose_symbol)( void * library, const char symbol[], const char version[] ) ) libcfa_public { |
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| 78 | const char *version = 0p; |
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| 79 | |
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| 80 | #pragma GCC diagnostic push |
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| 81 | #pragma GCC diagnostic ignored "-Wdiscarded-qualifiers" |
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| 82 | INTERPOSE( pthread_create , version ); |
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| 83 | INTERPOSE( pthread_join , version ); |
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| 84 | INTERPOSE( pthread_self , version ); |
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| 85 | INTERPOSE( pthread_attr_init , version ); |
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| 86 | INTERPOSE( pthread_attr_destroy , version ); |
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| 87 | INTERPOSE( pthread_attr_setstack , version ); |
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| 88 | INTERPOSE( pthread_attr_getstacksize , version ); |
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| 89 | INTERPOSE( pthread_sigmask , version ); |
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| 90 | INTERPOSE( pthread_sigqueue , version ); |
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| 91 | #pragma GCC diagnostic pop |
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| 92 | } |
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| 93 | |
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| 94 | int __cfaabi_pthread_create(pthread_t *_thread, const pthread_attr_t *attr, void *(*start_routine) (void *), void *arg){ |
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| 95 | return __cabi_libpthread.pthread_create(_thread, attr, start_routine, arg); |
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| 96 | } |
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| 97 | |
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| 98 | int __cfaabi_pthread_join(pthread_t _thread, void **retval){ |
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| 99 | return __cabi_libpthread.pthread_join(_thread, retval); |
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| 100 | } |
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| 101 | |
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| 102 | pthread_t __cfaabi_pthread_self(void){ |
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| 103 | return __cabi_libpthread.pthread_self(); |
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| 104 | } |
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| 105 | int __cfaabi_pthread_attr_init(pthread_attr_t *attr){ |
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| 106 | return __cabi_libpthread.pthread_attr_init(attr); |
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| 107 | } |
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| 108 | int __cfaabi_pthread_attr_destroy(pthread_attr_t *attr){ |
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| 109 | return __cabi_libpthread.pthread_attr_destroy(attr); |
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| 110 | } |
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| 111 | int __cfaabi_pthread_attr_setstack( pthread_attr_t *attr, void *stackaddr, size_t stacksize ){ |
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| 112 | return __cabi_libpthread.pthread_attr_setstack(attr, stackaddr, stacksize); |
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| 113 | } |
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| 114 | int read_pthread_attr_getstacksize( const pthread_attr_t *attr, size_t *stacksize ){ |
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| 115 | return __cabi_libpthread.pthread_attr_getstacksize(attr, stacksize); |
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| 116 | } |
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| 117 | int __cfaabi_pthread_sigmask(int how, const sigset_t *set, sigset_t *oldset){ |
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| 118 | return __cabi_libpthread.pthread_sigmask(how, set, oldset); |
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| 119 | } |
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| 120 | int __cfaabi_pthread_sigqueue(pthread_t _thread, int sig, const union sigval value){ |
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| 121 | return __cabi_libpthread.pthread_sigqueue(_thread, sig, value); |
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| 122 | } |
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| 123 | } |
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