LIBS_including_readline="$LIBS"
LIBS=`echo "$LIBS" | sed -e 's/-ledit//g' -e 's/-lreadline//g'`
-for ac_func in backtrace_symbols clock_gettime copyfile fdatasync getifaddrs getpeerucred getrlimit kqueue mbstowcs_l memset_s poll posix_fallocate ppoll pread preadv pstat pthread_is_threaded_np pwrite pwritev readlink readv setproctitle setproctitle_fast setsid shm_open strchrnul strsignal symlink sync_file_range uselocale wcstombs_l writev
+for ac_func in backtrace_symbols clock_gettime copyfile fdatasync getifaddrs getpeerucred getrlimit kqueue mbstowcs_l memset_s poll posix_fallocate ppoll pstat pthread_is_threaded_np readlink readv setproctitle setproctitle_fast setsid shm_open strchrnul strsignal symlink sync_file_range uselocale wcstombs_l writev
do :
as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
fi
+ac_fn_c_check_func "$LINENO" "pread" "ac_cv_func_pread"
+if test "x$ac_cv_func_pread" = xyes; then :
+ $as_echo "#define HAVE_PREAD 1" >>confdefs.h
+
+else
+ case " $LIBOBJS " in
+ *" pread.$ac_objext "* ) ;;
+ *) LIBOBJS="$LIBOBJS pread.$ac_objext"
+ ;;
+esac
+
+fi
+
+ac_fn_c_check_func "$LINENO" "preadv" "ac_cv_func_preadv"
+if test "x$ac_cv_func_preadv" = xyes; then :
+ $as_echo "#define HAVE_PREADV 1" >>confdefs.h
+
+else
+ case " $LIBOBJS " in
+ *" preadv.$ac_objext "* ) ;;
+ *) LIBOBJS="$LIBOBJS preadv.$ac_objext"
+ ;;
+esac
+
+fi
+
+ac_fn_c_check_func "$LINENO" "pwrite" "ac_cv_func_pwrite"
+if test "x$ac_cv_func_pwrite" = xyes; then :
+ $as_echo "#define HAVE_PWRITE 1" >>confdefs.h
+
+else
+ case " $LIBOBJS " in
+ *" pwrite.$ac_objext "* ) ;;
+ *) LIBOBJS="$LIBOBJS pwrite.$ac_objext"
+ ;;
+esac
+
+fi
+
+ac_fn_c_check_func "$LINENO" "pwritev" "ac_cv_func_pwritev"
+if test "x$ac_cv_func_pwritev" = xyes; then :
+ $as_echo "#define HAVE_PWRITEV 1" >>confdefs.h
+
+else
+ case " $LIBOBJS " in
+ *" pwritev.$ac_objext "* ) ;;
+ *) LIBOBJS="$LIBOBJS pwritev.$ac_objext"
+ ;;
+esac
+
+fi
+
ac_fn_c_check_func "$LINENO" "random" "ac_cv_func_random"
if test "x$ac_cv_func_random" = xyes; then :
$as_echo "#define HAVE_RANDOM 1" >>confdefs.h
poll
posix_fallocate
ppoll
- pread
- preadv
pstat
pthread_is_threaded_np
- pwrite
- pwritev
readlink
readv
setproctitle
inet_aton
link
mkdtemp
+ pread
+ preadv
+ pwrite
+ pwritev
random
srandom
strlcat
#include "common/file_utils.h"
#include "miscadmin.h"
#include "pgstat.h"
+#include "port/pg_iovec.h"
#include "portability/mem.h"
#include "storage/fd.h"
#include "storage/ipc.h"
{
return data_sync_retry ? elevel : PANIC;
}
+
+/*
+ * A convenience wrapper for pg_pwritev() that retries on partial write. If an
+ * error is returned, it is unspecified how much has been written.
+ */
+ssize_t
+pg_pwritev_with_retry(int fd, const struct iovec *iov, int iovcnt, off_t offset)
+{
+ struct iovec iov_copy[PG_IOV_MAX];
+ ssize_t sum = 0;
+ ssize_t part;
+
+ /* We'd better have space to make a copy, in case we need to retry. */
+ if (iovcnt > PG_IOV_MAX)
+ {
+ errno = EINVAL;
+ return -1;
+ }
+
+ for (;;)
+ {
+ /* Write as much as we can. */
+ part = pg_pwritev(fd, iov, iovcnt, offset);
+ if (part < 0)
+ return -1;
+
+#ifdef SIMULATE_SHORT_WRITE
+ part = Min(part, 4096);
+#endif
+
+ /* Count our progress. */
+ sum += part;
+ offset += part;
+
+ /* Step over iovecs that are done. */
+ while (iovcnt > 0 && iov->iov_len <= part)
+ {
+ part -= iov->iov_len;
+ ++iov;
+ --iovcnt;
+ }
+
+ /* Are they all done? */
+ if (iovcnt == 0)
+ {
+ /* We don't expect the kernel to write more than requested. */
+ Assert(part == 0);
+ break;
+ }
+
+ /*
+ * Move whatever's left to the front of our mutable copy and adjust
+ * the leading iovec.
+ */
+ Assert(iovcnt > 0);
+ memmove(iov_copy, iov, sizeof(*iov) * iovcnt);
+ Assert(iov->iov_len > part);
+ iov_copy[0].iov_base = (char *) iov_copy[0].iov_base + part;
+ iov_copy[0].iov_len -= part;
+ iov = iov_copy;
+ }
+
+ return sum;
+}
#include <dirent.h>
+struct iovec; /* avoid including port/pg_iovec.h here */
typedef int File;
extern int durable_rename_excl(const char *oldfile, const char *newfile, int loglevel);
extern void SyncDataDirectory(void);
extern int data_sync_elevel(int elevel);
+extern ssize_t pg_pwritev_with_retry(int fd,
+ const struct iovec *iov,
+ int iovcnt,
+ off_t offset);
/* Filename components */
#define PG_TEMP_FILES_DIR "pgsql_tmp"
pgstrcasecmp.o \
pgstrsignal.o \
pqsignal.o \
- pread.o \
- pwrite.o \
qsort.o \
qsort_arg.o \
quotes.o \
/*-------------------------------------------------------------------------
*
* pread.c
- * Implementation of pread[v](2) for platforms that lack one.
+ * Implementation of pread(2) for platforms that lack one.
*
* Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
*
* src/port/pread.c
*
* Note that this implementation changes the current file position, unlike
- * the POSIX function, so we use the name pg_pread(). Likewise for the
- * iovec version.
+ * the POSIX function, so we use the name pg_pread().
*
*-------------------------------------------------------------------------
*/
#include <unistd.h>
#endif
-#include "port/pg_iovec.h"
-
-#ifndef HAVE_PREAD
ssize_t
pg_pread(int fd, void *buf, size_t size, off_t offset)
{
return read(fd, buf, size);
#endif
}
-#endif
-
-#ifndef HAVE_PREADV
-ssize_t
-pg_preadv(int fd, const struct iovec *iov, int iovcnt, off_t offset)
-{
-#ifdef HAVE_READV
- if (iovcnt == 1)
- return pg_pread(fd, iov[0].iov_base, iov[0].iov_len, offset);
- if (lseek(fd, offset, SEEK_SET) < 0)
- return -1;
- return readv(fd, iov, iovcnt);
-#else
- ssize_t sum = 0;
- ssize_t part;
-
- for (int i = 0; i < iovcnt; ++i)
- {
- part = pg_pread(fd, iov[i].iov_base, iov[i].iov_len, offset);
- if (part < 0)
- {
- if (i == 0)
- return -1;
- else
- return sum;
- }
- sum += part;
- offset += part;
- if (part < iov[i].iov_len)
- return sum;
- }
- return sum;
-#endif
-}
-#endif
--- /dev/null
+/*-------------------------------------------------------------------------
+ *
+ * preadv.c
+ * Implementation of preadv(2) for platforms that lack one.
+ *
+ * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
+ *
+ * IDENTIFICATION
+ * src/port/preadv.c
+ *
+ * Note that this implementation changes the current file position, unlike
+ * the POSIX-like function, so we use the name pg_preadv().
+ *
+ *-------------------------------------------------------------------------
+ */
+
+
+#include "postgres.h"
+
+#ifdef WIN32
+#include <windows.h>
+#else
+#include <unistd.h>
+#endif
+
+#include "port/pg_iovec.h"
+
+ssize_t
+pg_preadv(int fd, const struct iovec *iov, int iovcnt, off_t offset)
+{
+#ifdef HAVE_READV
+ if (iovcnt == 1)
+ return pg_pread(fd, iov[0].iov_base, iov[0].iov_len, offset);
+ if (lseek(fd, offset, SEEK_SET) < 0)
+ return -1;
+ return readv(fd, iov, iovcnt);
+#else
+ ssize_t sum = 0;
+ ssize_t part;
+
+ for (int i = 0; i < iovcnt; ++i)
+ {
+ part = pg_pread(fd, iov[i].iov_base, iov[i].iov_len, offset);
+ if (part < 0)
+ {
+ if (i == 0)
+ return -1;
+ else
+ return sum;
+ }
+ sum += part;
+ offset += part;
+ if (part < iov[i].iov_len)
+ return sum;
+ }
+ return sum;
+#endif
+}
/*-------------------------------------------------------------------------
*
* pwrite.c
- * Implementation of pwrite[v](2) for platforms that lack one.
+ * Implementation of pwrite(2) for platforms that lack one.
*
* Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
*
* src/port/pwrite.c
*
* Note that this implementation changes the current file position, unlike
- * the POSIX function, so we use the name pg_pwrite(). Likewise for the
- * iovec version.
+ * the POSIX function, so we use the name pg_pwrite().
*
*-------------------------------------------------------------------------
*/
#include <unistd.h>
#endif
-#include "port/pg_iovec.h"
-
-#ifndef HAVE_PWRITE
ssize_t
pg_pwrite(int fd, const void *buf, size_t size, off_t offset)
{
return write(fd, buf, size);
#endif
}
-#endif
-
-#ifndef HAVE_PWRITEV
-ssize_t
-pg_pwritev(int fd, const struct iovec *iov, int iovcnt, off_t offset)
-{
-#ifdef HAVE_WRITEV
- if (iovcnt == 1)
- return pg_pwrite(fd, iov[0].iov_base, iov[0].iov_len, offset);
- if (lseek(fd, offset, SEEK_SET) < 0)
- return -1;
- return writev(fd, iov, iovcnt);
-#else
- ssize_t sum = 0;
- ssize_t part;
-
- for (int i = 0; i < iovcnt; ++i)
- {
- part = pg_pwrite(fd, iov[i].iov_base, iov[i].iov_len, offset);
- if (part < 0)
- {
- if (i == 0)
- return -1;
- else
- return sum;
- }
- sum += part;
- offset += part;
- if (part < iov[i].iov_len)
- return sum;
- }
- return sum;
-#endif
-}
-#endif
-
-/*
- * A convenience wrapper for pg_pwritev() that retries on partial write. If an
- * error is returned, it is unspecified how much has been written.
- */
-ssize_t
-pg_pwritev_with_retry(int fd, const struct iovec *iov, int iovcnt, off_t offset)
-{
- struct iovec iov_copy[PG_IOV_MAX];
- ssize_t sum = 0;
- ssize_t part;
-
- /* We'd better have space to make a copy, in case we need to retry. */
- if (iovcnt > PG_IOV_MAX)
- {
- errno = EINVAL;
- return -1;
- }
-
- for (;;)
- {
- /* Write as much as we can. */
- part = pg_pwritev(fd, iov, iovcnt, offset);
- if (part < 0)
- return -1;
-
-#ifdef SIMULATE_SHORT_WRITE
- part = Min(part, 4096);
-#endif
-
- /* Count our progress. */
- sum += part;
- offset += part;
-
- /* Step over iovecs that are done. */
- while (iovcnt > 0 && iov->iov_len <= part)
- {
- part -= iov->iov_len;
- ++iov;
- --iovcnt;
- }
-
- /* Are they all done? */
- if (iovcnt == 0)
- {
- /* We don't expect the kernel to write more than requested. */
- Assert(part == 0);
- break;
- }
-
- /*
- * Move whatever's left to the front of our mutable copy and adjust
- * the leading iovec.
- */
- Assert(iovcnt > 0);
- memmove(iov_copy, iov, sizeof(*iov) * iovcnt);
- Assert(iov->iov_len > part);
- iov_copy[0].iov_base = (char *) iov_copy[0].iov_base + part;
- iov_copy[0].iov_len -= part;
- iov = iov_copy;
- }
-
- return sum;
-}
--- /dev/null
+/*-------------------------------------------------------------------------
+ *
+ * pwritev.c
+ * Implementation of pwritev(2) for platforms that lack one.
+ *
+ * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
+ *
+ * IDENTIFICATION
+ * src/port/pwritev.c
+ *
+ * Note that this implementation changes the current file position, unlike
+ * the POSIX-like function, so we use the name pg_pwritev().
+ *
+ *-------------------------------------------------------------------------
+ */
+
+
+#include "postgres.h"
+
+#ifdef WIN32
+#include <windows.h>
+#else
+#include <unistd.h>
+#endif
+
+#include "port/pg_iovec.h"
+
+ssize_t
+pg_pwritev(int fd, const struct iovec *iov, int iovcnt, off_t offset)
+{
+#ifdef HAVE_WRITEV
+ if (iovcnt == 1)
+ return pg_pwrite(fd, iov[0].iov_base, iov[0].iov_len, offset);
+ if (lseek(fd, offset, SEEK_SET) < 0)
+ return -1;
+ return writev(fd, iov, iovcnt);
+#else
+ ssize_t sum = 0;
+ ssize_t part;
+
+ for (int i = 0; i < iovcnt; ++i)
+ {
+ part = pg_pwrite(fd, iov[i].iov_base, iov[i].iov_len, offset);
+ if (part < 0)
+ {
+ if (i == 0)
+ return -1;
+ else
+ return sum;
+ }
+ sum += part;
+ offset += part;
+ if (part < iov[i].iov_len)
+ return sum;
+ }
+ return sum;
+#endif
+}
srandom.c getaddrinfo.c gettimeofday.c inet_net_ntop.c kill.c open.c
erand48.c snprintf.c strlcat.c strlcpy.c dirmod.c noblock.c path.c
dirent.c dlopen.c getopt.c getopt_long.c link.c
- pread.c pwrite.c pg_bitutils.c
+ pread.c preadv.c pwrite.c pwritev.c pg_bitutils.c
pg_strong_random.c pgcheckdir.c pgmkdirp.c pgsleep.c pgstrcasecmp.c
pqsignal.c mkdtemp.c qsort.c qsort_arg.c quotes.c system.c
strerror.c tar.c thread.c
projects / users / c2main / postgres.git / commitdiff