Initial version.

src/nxt_solaris_sendfilev.c

@@ -0,0 +1,170 @@
+
+/*
+ * Copyright (C) Igor Sysoev
+ * Copyright (C) NGINX, Inc.
+ */
+
+#include <nxt_main.h>
+
+
+/*
+ * sendfilev() has been introduced in Solaris 8 (7/01).
+ * According to sendfilev(3EXT) it can write to:
+ *
+ *   a file descriptor to a regular file or to a AF_NCA, AF_INET, or
+ *   AF_INET6 family type SOCK_STREAM socket that is open for writing.
+ */
+
+ssize_t nxt_solaris_event_conn_io_sendfilev(nxt_event_conn_t *c, nxt_buf_t *b,
+    size_t limit);
+static size_t nxt_solaris_buf_coalesce(nxt_buf_t *b, sendfilevec_t *sfv,
+    int32_t *nsfv, nxt_bool_t *sync, size_t limit);
+
+
+ssize_t
+nxt_solaris_event_conn_io_sendfilev(nxt_event_conn_t *c, nxt_buf_t *b,
+    size_t limit)
+{
+    size_t         sent;
+    ssize_t        n;
+    int32_t        nsfv;
+    nxt_err_t      err;
+    nxt_off_t      size;
+    nxt_bool_t     sync;
+    sendfilevec_t  sfv[NXT_IOBUF_MAX];
+
+    if (c->sendfile == 0) {
+        /* AF_UNIX does not support sendfilev(). */
+        return nxt_event_conn_io_sendbuf(c, b, limit);
+    }
+
+    sync = 0;
+
+    size = nxt_solaris_buf_coalesce(b, sfv, &nsfv, &sync, limit);
+
+    nxt_log_debug(c->socket.log, "sendfilev(%d, %D)", c->socket.fd, nsfv);
+
+    if (nsfv == 0 && sync) {
+        return 0;
+    }
+
+    sent = 0;
+    n = sendfilev(c->socket.fd, sfv, nsfv, &sent);
+
+    err = (n == -1) ? nxt_errno : 0;
+
+    nxt_log_debug(c->socket.log, "sendfilev(): %d sent:%uz", n, sent);
+
+    if (n == -1) {
+        switch (err) {
+
+        case NXT_EAGAIN:
+            c->socket.write_ready = 0;
+            break;
+
+        case NXT_EINTR:
+            break;
+
+        default:
+            c->socket.error = err;
+            nxt_log_error(nxt_socket_error_level(err, c->socket.log_error),
+                          c->socket.log, "sendfilev(%d, %D) failed %E",
+                          c->socket.fd, nsfv, err);
+
+            return NXT_ERROR;
+        }
+
+        nxt_log_debug(c->socket.log, "sendfilev() %E", err);
+
+        return sent;
+    }
+
+    if ((nxt_off_t) sent < size) {
+        c->socket.write_ready = 0;
+    }
+
+    return sent;
+}
+
+
+static size_t
+nxt_solaris_buf_coalesce(nxt_buf_t *b, sendfilevec_t *sfv, int32_t *nsfv,
+    nxt_bool_t *sync, size_t limit)
+{
+    size_t     size, total;
+    nxt_fd_t   fd, last_fd;
+    nxt_int_t  i;
+    nxt_off_t  pos, last_pos;
+
+    i = -1;
+    last_fd = -1;
+    last_pos = 0;
+    total = 0;
+
+    for (total = 0; b != NULL && total < limit; b = b->next) {
+
+        if (nxt_buf_is_file(b)) {
+
+            fd = b->file->fd;
+            pos = b->file_pos;
+            size = b->file_end - pos;
+
+            if (size == 0) {
+                continue;
+            }
+
+            if (total + size > limit) {
+                size = limit - total;
+            }
+
+        } else if (nxt_buf_is_mem(b)) {
+
+            fd = SFV_FD_SELF;
+            pos = (uintptr_t) b->mem.pos;
+            size = b->mem.free - b->mem.pos;
+
+            if (size == 0) {
+                continue;
+            }
+
+            if (total + size > limit) {
+                size = limit - total;
+            }
+
+        } else {
+            *sync = 1;
+            continue;
+        }
+
+        if (size == 0) {
+            break;
+        }
+
+        if (fd != last_fd || pos != last_pos) {
+
+            if (++i >= NXT_IOBUF_MAX) {
+                goto done;
+            }
+
+            sfv[i].sfv_fd = fd;
+            sfv[i].sfv_flag = 0;
+            sfv[i].sfv_off = pos;
+            sfv[i].sfv_len = size;
+
+        } else {
+            sfv[i].sfv_len += size;
+        }
+
+        total += size;
+        last_pos = pos + size;
+        last_fd = fd;
+    }
+
+    i++;
+
+done:
+
+    *nsfv = i;
+
+    return total;
+}