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/*-
* Copyright (c) 2014-2017 MongoDB, Inc.
* Copyright (c) 2008-2014 WiredTiger, Inc.
* All rights reserved.
*
* See the file LICENSE for redistribution information.
*/
#include "wt_internal.h"
/*
* __wt_optrack_record_funcid --
* Record optrack function id
*/
void
__wt_optrack_record_funcid(
WT_SESSION_IMPL *session, const char *func, uint16_t *func_idp)
{
WT_CONNECTION_IMPL *conn;
WT_DECL_ITEM(tmp);
WT_DECL_RET;
wt_off_t fsize;
conn = S2C(session);
WT_ERR(__wt_scr_alloc(session, strlen(func) + 32, &tmp));
__wt_spin_lock(session, &conn->optrack_map_spinlock);
if (*func_idp == 0) {
*func_idp = ++conn->optrack_uid;
WT_ERR(__wt_buf_fmt(
session, tmp, "%" PRIu16 " %s\n", *func_idp, func));
WT_ERR(__wt_filesize(session, conn->optrack_map_fh, &fsize));
WT_ERR(__wt_write(session,
conn->optrack_map_fh, fsize, tmp->size, tmp->data));
}
if (0) {
err: WT_PANIC_MSG(session, ret, "%s", __func__);
}
__wt_spin_unlock(session, &conn->optrack_map_spinlock);
__wt_scr_free(session, &tmp);
}
/*
* __wt_optrack_open_file --
* Open the per-session operation-tracking file.
*/
int
__wt_optrack_open_file(WT_SESSION_IMPL *session)
{
WT_CONNECTION_IMPL *conn;
WT_DECL_ITEM(buf);
WT_DECL_RET;
WT_OPTRACK_HEADER optrack_header = {WT_OPTRACK_VERSION, 0};
conn = S2C(session);
if (!F_ISSET(conn, WT_CONN_OPTRACK))
return (WT_ERROR);
WT_RET(__wt_scr_alloc(session, 0, &buf));
WT_ERR(__wt_filename_construct(session, conn->optrack_path,
"optrack", conn->optrack_pid, session->id, buf));
WT_ERR(__wt_open(session,
(const char *)buf->data, WT_FS_OPEN_FILE_TYPE_REGULAR,
WT_FS_OPEN_CREATE, &session->optrack_fh));
/* Write the header into the operation-tracking file. */
if (F_ISSET(session, WT_SESSION_INTERNAL))
optrack_header.optrack_session_internal = 1;
WT_ERR(session->optrack_fh->handle->fh_write(
session->optrack_fh->handle, (WT_SESSION *)session,
0, sizeof(WT_OPTRACK_HEADER), &optrack_header));
session->optrack_offset = sizeof(WT_OPTRACK_HEADER);
if (0) {
err: WT_TRET(__wt_close(session, &session->optrack_fh));
}
__wt_scr_free(session, &buf);
return (ret);
}
/*
* __wt_optrack_flush_buffer --
* Flush optrack buffer. Returns the number of bytes flushed to the file.
*/
size_t
__wt_optrack_flush_buffer(WT_SESSION_IMPL *s)
{
WT_DECL_RET;
if (s->optrack_fh == NULL)
if (__wt_optrack_open_file(s))
return (0);
ret = s->optrack_fh->handle->fh_write(s->optrack_fh->handle,
(WT_SESSION *)s, (wt_off_t)s->optrack_offset,
s->optrackbuf_ptr * sizeof(WT_OPTRACK_RECORD), s->optrack_buf);
if (ret == 0)
return (s->optrackbuf_ptr * sizeof(WT_OPTRACK_RECORD));
else
return (0);
}
/*
* __wt_optrack_get_expensive_timestamp --
* Obtain a timestamp via a system call on platforms where obtaining it
* directly from the hardware register is not supported.
*/
uint64_t
__wt_optrack_get_expensive_timestamp(WT_SESSION_IMPL *session)
{
struct timespec tsp;
__wt_epoch_raw(session, &tsp);
return ((uint64_t)(tsp.tv_sec * WT_BILLION + tsp.tv_nsec));
}
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