Adding upstream version 1.44.3.upstream/1.44.3upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 159 insertions, 0 deletions

diff --git a/fluent-bit/lib/librdkafka-2.1.0/src/rdinterval.h b/fluent-bit/lib/librdkafka-2.1.0/src/rdinterval.h
new file mode 100644
index 00000000..42833764
--- /dev/null
+++ b/fluent-bit/lib/librdkafka-2.1.0/src/rdinterval.h
@@ -0,0 +1,159 @@
+/*
+ * librdkafka - Apache Kafka C library
+ *
+ * Copyright (c) 2018 Magnus Edenhill
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _RDINTERVAL_H_
+#define _RDINTERVAL_H_
+
+#include "rd.h"
+
+typedef struct rd_interval_s {
+        rd_ts_t ri_ts_last; /* last interval timestamp */
+        rd_ts_t ri_fixed;   /* fixed interval if provided interval is 0 */
+        int ri_backoff;     /* back off the next interval by this much */
+} rd_interval_t;
+
+
+static RD_INLINE RD_UNUSED void rd_interval_init(rd_interval_t *ri) {
+        memset(ri, 0, sizeof(*ri));
+}
+
+
+
+/**
+ * Returns the number of microseconds the interval has been over-shot.
+ * If the return value is >0 (i.e., time for next intervalled something) then
+ * the time interval is updated to the current time.
+ *
+ * The current time can be provided in 'now', or if this is set to 0 the time
+ * will be gathered automatically.
+ *
+ * If 'interval_us' is set to 0 the fixed interval will be used, see
+ * 'rd_interval_fixed()'.
+ *
+ * If this is the first time rd_interval() is called after an _init() or
+ * _reset() or the \p immediate parameter is true, then a positive value
+ * will be returned immediately even though the initial interval has not
+ * passed.
+ */
+#define rd_interval(ri, interval_us, now) rd_interval0(ri, interval_us, now, 0)
+#define rd_interval_immediate(ri, interval_us, now)                            \
+        rd_interval0(ri, interval_us, now, 1)
+static RD_INLINE RD_UNUSED rd_ts_t rd_interval0(rd_interval_t *ri,
+                                                rd_ts_t interval_us,
+                                                rd_ts_t now,
+                                                int immediate) {
+        rd_ts_t diff;
+
+        if (!now)
+                now = rd_clock();
+        if (!interval_us)
+                interval_us = ri->ri_fixed;
+
+        if (ri->ri_ts_last || !immediate) {
+                diff = now - (ri->ri_ts_last + interval_us + ri->ri_backoff);
+        } else
+                diff = 1;
+        if (unlikely(diff > 0)) {
+                ri->ri_ts_last = now;
+                ri->ri_backoff = 0;
+        }
+
+        return diff;
+}
+
+
+/**
+ * Reset the interval to zero, i.e., the next call to rd_interval()
+ * will be immediate.
+ */
+static RD_INLINE RD_UNUSED void rd_interval_reset(rd_interval_t *ri) {
+        ri->ri_ts_last = 0;
+        ri->ri_backoff = 0;
+}
+
+/**
+ * Reset the interval to 'now'. If now is 0, the time will be gathered
+ * automatically.
+ */
+static RD_INLINE RD_UNUSED void rd_interval_reset_to_now(rd_interval_t *ri,
+                                                         rd_ts_t now) {
+        if (!now)
+                now = rd_clock();
+
+        ri->ri_ts_last = now;
+        ri->ri_backoff = 0;
+}
+
+/**
+ * Back off the next interval by `backoff_us` microseconds.
+ */
+static RD_INLINE RD_UNUSED void rd_interval_backoff(rd_interval_t *ri,
+                                                    int backoff_us) {
+        ri->ri_backoff = backoff_us;
+}
+
+/**
+ * Expedite (speed up) the next interval by `expedite_us` microseconds.
+ * If `expedite_us` is 0 the interval will be set to trigger
+ * immedately on the next rd_interval() call.
+ */
+static RD_INLINE RD_UNUSED void rd_interval_expedite(rd_interval_t *ri,
+                                                     int expedite_us) {
+        if (!expedite_us)
+                ri->ri_ts_last = 0;
+        else
+                ri->ri_backoff = -expedite_us;
+}
+
+/**
+ * Specifies a fixed interval to use if rd_interval() is called with
+ * `interval_us` set to 0.
+ */
+static RD_INLINE RD_UNUSED void rd_interval_fixed(rd_interval_t *ri,
+                                                  rd_ts_t fixed_us) {
+        ri->ri_fixed = fixed_us;
+}
+
+/**
+ * Disables the interval (until rd_interval_init()/reset() is called).
+ * A disabled interval will never return a positive value from
+ * rd_interval().
+ */
+static RD_INLINE RD_UNUSED void rd_interval_disable(rd_interval_t *ri) {
+        /* Set last beat to a large value a long time in the future. */
+        ri->ri_ts_last = 6000000000000000000LL; /* in about 190000 years */
+}
+
+/**
+ * Returns true if the interval is disabled.
+ */
+static RD_INLINE RD_UNUSED int rd_interval_disabled(const rd_interval_t *ri) {
+        return ri->ri_ts_last == 6000000000000000000LL;
+}
+
+#endif /* _RDINTERVAL_H_ */