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-rw-r--r--tools/perf/util/wrapper.c72
1 files changed, 1 insertions, 71 deletions
diff --git a/tools/perf/util/wrapper.c b/tools/perf/util/wrapper.c
index bf44ca85d23b..c4ced7c1251d 100644
--- a/tools/perf/util/wrapper.c
+++ b/tools/perf/util/wrapper.c
@@ -48,7 +48,7 @@ void *xmalloc(size_t size)
48 * and returns a pointer to the allocated memory. If the allocation fails, 48 * and returns a pointer to the allocated memory. If the allocation fails,
49 * the program dies. 49 * the program dies.
50 */ 50 */
51void *xmemdupz(const void *data, size_t len) 51static void *xmemdupz(const void *data, size_t len)
52{ 52{
53 char *p = xmalloc(len + 1); 53 char *p = xmalloc(len + 1);
54 memcpy(p, data, len); 54 memcpy(p, data, len);
@@ -78,73 +78,3 @@ void *xrealloc(void *ptr, size_t size)
78 } 78 }
79 return ret; 79 return ret;
80} 80}
81
82/*
83 * xread() is the same a read(), but it automatically restarts read()
84 * operations with a recoverable error (EAGAIN and EINTR). xread()
85 * DOES NOT GUARANTEE that "len" bytes is read even if the data is available.
86 */
87static ssize_t xread(int fd, void *buf, size_t len)
88{
89 ssize_t nr;
90 while (1) {
91 nr = read(fd, buf, len);
92 if ((nr < 0) && (errno == EAGAIN || errno == EINTR))
93 continue;
94 return nr;
95 }
96}
97
98/*
99 * xwrite() is the same a write(), but it automatically restarts write()
100 * operations with a recoverable error (EAGAIN and EINTR). xwrite() DOES NOT
101 * GUARANTEE that "len" bytes is written even if the operation is successful.
102 */
103static ssize_t xwrite(int fd, const void *buf, size_t len)
104{
105 ssize_t nr;
106 while (1) {
107 nr = write(fd, buf, len);
108 if ((nr < 0) && (errno == EAGAIN || errno == EINTR))
109 continue;
110 return nr;
111 }
112}
113
114ssize_t read_in_full(int fd, void *buf, size_t count)
115{
116 char *p = buf;
117 ssize_t total = 0;
118
119 while (count > 0) {
120 ssize_t loaded = xread(fd, p, count);
121 if (loaded <= 0)
122 return total ? total : loaded;
123 count -= loaded;
124 p += loaded;
125 total += loaded;
126 }
127
128 return total;
129}
130
131ssize_t write_in_full(int fd, const void *buf, size_t count)
132{
133 const char *p = buf;
134 ssize_t total = 0;
135
136 while (count > 0) {
137 ssize_t written = xwrite(fd, p, count);
138 if (written < 0)
139 return -1;
140 if (!written) {
141 errno = ENOSPC;
142 return -1;
143 }
144 count -= written;
145 p += written;
146 total += written;
147 }
148
149 return total;
150}