Move C/C++ sources to src subdirectory

2021-02-25 23:59:03 +03:00
parent 08aed962de
commit bf9a175efc
87 changed files with 194 additions and 189 deletions
@@ -0,0 +1,123 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.1 or GNU GPL-2.0+ (see README.md for details)
+
+#include <errno.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "rw_blocking.h"
+
+int read_blocking(int fd, void *read_buf, size_t remaining)
+{
+    size_t done = 0;
+    while (done < remaining)
+    {
+        size_t r = read(fd, read_buf, remaining-done);
+        if (r <= 0)
+        {
+            if (!errno)
+            {
+                // EOF
+                return done;
+            }
+            else if (errno != EAGAIN && errno != EPIPE)
+            {
+                perror("read");
+                exit(1);
+            }
+            continue;
+        }
+        done += r;
+        read_buf += r;
+    }
+    return done;
+}
+
+int write_blocking(int fd, void *write_buf, size_t remaining)
+{
+    size_t done = 0;
+    while (done < remaining)
+    {
+        size_t r = write(fd, write_buf, remaining-done);
+        if (r < 0)
+        {
+            if (errno != EAGAIN && errno != EPIPE)
+            {
+                perror("write");
+                exit(1);
+            }
+            continue;
+        }
+        done += r;
+        write_buf += r;
+    }
+    return done;
+}
+
+int readv_blocking(int fd, iovec *iov, int iovcnt)
+{
+    int v = 0;
+    int done = 0;
+    while (v < iovcnt)
+    {
+        ssize_t r = readv(fd, iov, iovcnt);
+        if (r < 0)
+        {
+            if (errno != EAGAIN && errno != EPIPE)
+            {
+                perror("writev");
+                exit(1);
+            }
+            continue;
+        }
+        while (v < iovcnt)
+        {
+            if (iov[v].iov_len > r)
+            {
+                iov[v].iov_len -= r;
+                iov[v].iov_base += r;
+                break;
+            }
+            else
+            {
+                v++;
+            }
+        }
+        done += r;
+    }
+    return done;
+}
+
+int writev_blocking(int fd, iovec *iov, int iovcnt)
+{
+    int v = 0;
+    int done = 0;
+    while (v < iovcnt)
+    {
+        ssize_t r = writev(fd, iov, iovcnt);
+        if (r < 0)
+        {
+            if (errno != EAGAIN && errno != EPIPE)
+            {
+                perror("writev");
+                exit(1);
+            }
+            continue;
+        }
+        while (v < iovcnt)
+        {
+            if (iov[v].iov_len > r)
+            {
+                iov[v].iov_len -= r;
+                iov[v].iov_base += r;
+                break;
+            }
+            else
+            {
+                v++;
+            }
+        }
+        done += r;
+    }
+    return done;
+}