atomicio.hh (5548:19d45fa7315c) | atomicio.hh (11235:4162427127e9) |
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1/* 2 * Copyright (c) 2008 The Hewlett-Packard Development Company 3 * All rights reserved. 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: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; --- 27 unchanged lines hidden (view full) --- 36// These functions keep reading/writing, if possible, until all data 37// has been transferred. Basically, try again when there's no error, 38// but there is data left also retry on EINTR. 39// This function blocks until it is done. 40 41ssize_t atomic_read(int fd, void *s, size_t n); 42ssize_t atomic_write(int fd, const void *s, size_t n); 43 | 1/* 2 * Copyright (c) 2008 The Hewlett-Packard Development Company 3 * All rights reserved. 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: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; --- 27 unchanged lines hidden (view full) --- 36// These functions keep reading/writing, if possible, until all data 37// has been transferred. Basically, try again when there's no error, 38// but there is data left also retry on EINTR. 39// This function blocks until it is done. 40 41ssize_t atomic_read(int fd, void *s, size_t n); 42ssize_t atomic_write(int fd, const void *s, size_t n); 43 |
44/** 45 * Statically allocate a string and write it to a file descriptor. 46 * 47 * @warning The return value will from atomic_write will be ignored 48 * which means that errors will be ignored. This is normally fine as 49 * this macro is intended to be used in fatal signal handlers where 50 * error handling might not be feasible. 51 */ 52#define STATIC_MSG(fd, m) \ 53 do { \ 54 static const char msg[] = m; \ 55 atomic_write(fd, msg, sizeof(msg) - 1); \ 56 } while(0) 57 58/** 59 * Statically allocate a string and write it to STDERR. 60 * 61 * @warning The return value will from atomic_write will be ignored 62 * which means that errors will be ignored. This is normally fine as 63 * this macro is intended to be used in fatal signal handlers where 64 * error handling might not be feasible. 65 */ 66#define STATIC_ERR(m) STATIC_MSG(STDERR_FILENO, m) 67 |
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44#endif // __BASE_ATOMICIO_HH__ | 68#endif // __BASE_ATOMICIO_HH__ |