atomicio.cc (5548:19d45fa7315c) atomicio.cc (6227:a17798f2a52c)
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;

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32#include <cstdio>
33
34#include "base/atomicio.hh"
35
36ssize_t
37atomic_read(int fd, void *s, size_t n)
38{
39 char *p = reinterpret_cast<char *>(s);
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;

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32#include <cstdio>
33
34#include "base/atomicio.hh"
35
36ssize_t
37atomic_read(int fd, void *s, size_t n)
38{
39 char *p = reinterpret_cast<char *>(s);
40 ssize_t pos = 0;
40 size_t pos = 0;
41
42 // Keep reading until we've gotten all of the data.
43 while (n > pos) {
44 ssize_t result = read(fd, p + pos, n - pos);
45
46 // We didn't get any more data, so we should probably punt,
47 // otherwise we'd just keep spinning
48 if (result == 0)

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61
62 return pos;
63}
64
65ssize_t
66atomic_write(int fd, const void *s, size_t n)
67{
68 const char *p = reinterpret_cast<const char *>(s);
41
42 // Keep reading until we've gotten all of the data.
43 while (n > pos) {
44 ssize_t result = read(fd, p + pos, n - pos);
45
46 // We didn't get any more data, so we should probably punt,
47 // otherwise we'd just keep spinning
48 if (result == 0)

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61
62 return pos;
63}
64
65ssize_t
66atomic_write(int fd, const void *s, size_t n)
67{
68 const char *p = reinterpret_cast<const char *>(s);
69 ssize_t pos = 0;
69 size_t pos = 0;
70
71 // Keep writing until we've written all of the data
72 while (n > pos) {
73 ssize_t result = write(fd, p + pos, n - pos);
74
75 // We didn't manage to write anything this time, so we should
76 // probably punt, otherwise we'd just keep spinning
77 if (result == 0)

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71 // Keep writing until we've written all of the data
72 while (n > pos) {
73 ssize_t result = write(fd, p + pos, n - pos);
74
75 // We didn't manage to write anything this time, so we should
76 // probably punt, otherwise we'd just keep spinning
77 if (result == 0)

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