[master] 9232cd6 Generalize the param/bits code, we can do more with it that way.

Poul-Henning Kamp phk at varnish-cache.org
Mon Aug 27 20:10:21 CEST 2012


commit 9232cd638abebd9868c859c16dbbb4c64ae39391
Author: Poul-Henning Kamp <phk at FreeBSD.org>
Date:   Mon Aug 27 16:46:01 2012 +0000

    Generalize the param/bits code, we can do more with it that way.

diff --git a/bin/varnishd/Makefile.am b/bin/varnishd/Makefile.am
index 78f253c..3d35113 100644
--- a/bin/varnishd/Makefile.am
+++ b/bin/varnishd/Makefile.am
@@ -61,7 +61,7 @@ varnishd_SOURCES = \
 	mgt/mgt_cli.c \
 	mgt/mgt_main.c \
 	mgt/mgt_param.c \
-	mgt/mgt_param_vsl.c \
+	mgt/mgt_param_bits.c \
 	mgt/mgt_pool.c \
 	mgt/mgt_sandbox.c \
 	mgt/mgt_sandbox_solaris.c \
diff --git a/bin/varnishd/mgt/mgt_param_bits.c b/bin/varnishd/mgt/mgt_param_bits.c
new file mode 100644
index 0000000..1910f2b
--- /dev/null
+++ b/bin/varnishd/mgt/mgt_param_bits.c
@@ -0,0 +1,168 @@
+/*-
+ * Copyright (c) 2006 Verdens Gang AS
+ * Copyright (c) 2006-2011 Varnish Software AS
+ * All rights reserved.
+ *
+ * Author: Poul-Henning Kamp <phk at phk.freebsd.dk>
+ *
+ * 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 AUTHOR 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 AUTHOR 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.
+ */
+
+#include "config.h"
+
+#include <unistd.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "common/params.h"
+#include "mgt/mgt.h"
+#include "mgt/mgt_param.h"
+
+#include "vav.h"
+#include "vcli.h"
+#include "vcli_common.h"
+#include "vcli_priv.h"
+
+#include "vapi/vsl_int.h"
+
+/*--------------------------------------------------------------------
+ */
+
+enum bit_do {BSET, BCLR, BTST};
+
+static int
+bit(uint8_t *p, unsigned no, enum bit_do act)
+{
+	uint8_t b;
+
+	p += (no >> 3);
+	b = (0x80 >> (no & 7));
+	if (act == BSET)
+		*p |= b;
+	else if (act == BCLR)
+		*p &= ~b;
+	return (*p & b);
+}
+
+/*--------------------------------------------------------------------
+ */
+
+static void
+bit_tweak(struct cli *cli, uint8_t *p, unsigned l, const char *arg,
+    const char * const *tags, const char *desc, const char *sign)
+{
+	int i, n;
+	unsigned j;
+	char **av;
+	const char *s;
+
+	av = VAV_Parse(arg, &n, ARGV_COMMA);
+	if (av[0] != NULL) {
+		VCLI_Out(cli, "Cannot parse: %s\n", av[0]);
+		VCLI_SetResult(cli, CLIS_PARAM);
+		VAV_Free(av);
+		return;
+	}
+	for (i = 1; av[i] != NULL; i++) {
+		s = av[i];
+		if (*s != '-' && *s != '+') {
+			VCLI_Out(cli, "Missing '+' or '-' (%s)\n", s);
+			VCLI_SetResult(cli, CLIS_PARAM);
+			VAV_Free(av);
+			return;
+		}
+		for (j = 0; j < l; j++) {
+			if (tags[j] != NULL && !strcasecmp(s + 1, tags[j]))
+				break;
+		}
+		if (tags[j] == NULL) {
+			VCLI_Out(cli, "Unknown %s (%s)\n", desc, s);
+			VCLI_SetResult(cli, CLIS_PARAM);
+			VAV_Free(av);
+			return;
+		}
+		assert(j < l);
+		if (s[0] == *sign)
+			(void)bit(p, j, BSET);
+		else
+			(void)bit(p, j, BCLR);
+	}
+	VAV_Free(av);
+}
+
+
+/*--------------------------------------------------------------------
+ * The vsl_mask parameter
+ */
+
+static const char * const VSL_tags[256] = {
+#  define SLTM(foo,sdesc,ldesc)       [SLT_##foo] = #foo,
+#  include "tbl/vsl_tags.h"
+#  undef SLTM
+	NULL
+};
+
+static void
+tweak_vsl_mask(struct cli *cli, const struct parspec *par, const char *arg)
+{
+	unsigned j;
+	const char *s;
+	(void)par;
+
+	if (arg != NULL) {
+		if (!strcmp(arg, "default")) {
+			memset(mgt_param.vsl_mask,
+			    0, sizeof mgt_param.vsl_mask);
+			(void)bit(mgt_param.vsl_mask, SLT_VCL_trace, BSET);
+			(void)bit(mgt_param.vsl_mask, SLT_WorkThread, BSET);
+			(void)bit(mgt_param.vsl_mask, SLT_Hash, BSET);
+		} else {
+			bit_tweak(cli, mgt_param.vsl_mask,
+			    SLT_Reserved, arg, VSL_tags,
+			    "VSL tag", "-");
+		}
+	} else {
+		s = "";
+		for (j = 0; j < (unsigned)SLT_Reserved; j++) {
+			if (bit(mgt_param.vsl_mask, j, BTST)) {
+				VCLI_Out(cli, "%s-%s", s, VSL_tags[j]);
+				s = ",";
+			}
+		}
+		if (*s == '\0')
+			VCLI_Out(cli, "(all enabled)");
+	}
+}
+
+/*--------------------------------------------------------------------
+ * The parameter table itself
+ */
+
+const struct parspec VSL_parspec[] = {
+	{ "vsl_mask", tweak_vsl_mask, NULL, 0, 0,
+		"Mask individual VSL messages from being logged.\n"
+		"\tdefault\tSet default value\n"
+		"Use +/- prefixe in front of VSL tag name, to mask/unmask "
+		"individual VSL messages.",
+		0, "default", "" },
+	{ NULL, NULL, NULL }
+};
diff --git a/bin/varnishd/mgt/mgt_param_vsl.c b/bin/varnishd/mgt/mgt_param_vsl.c
deleted file mode 100644
index 28ba7de..0000000
--- a/bin/varnishd/mgt/mgt_param_vsl.c
+++ /dev/null
@@ -1,138 +0,0 @@
-/*-
- * Copyright (c) 2006 Verdens Gang AS
- * Copyright (c) 2006-2011 Varnish Software AS
- * All rights reserved.
- *
- * Author: Poul-Henning Kamp <phk at phk.freebsd.dk>
- *
- * 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 AUTHOR 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 AUTHOR 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.
- */
-
-#include "config.h"
-
-#include <unistd.h>
-#include <string.h>
-#include <stdio.h>
-
-#include "common/params.h"
-#include "mgt/mgt.h"
-#include "mgt/mgt_param.h"
-
-#include "vav.h"
-#include "vcli.h"
-#include "vcli_common.h"
-#include "vcli_priv.h"
-
-#include "vapi/vsl_int.h"
-
-static const char * const VSL_tags[256] = {
-#  define SLTM(foo,sdesc,ldesc)       [SLT_##foo] = #foo,
-#  include "tbl/vsl_tags.h"
-#  undef SLTM
-};
-
-enum bit_do {BSET, BCLR, BTST};
-
-static int
-vsl_bit(unsigned no, enum bit_do act)
-{
-	volatile uint8_t *bm = &mgt_param.vsl_mask[0];
-	uint8_t b;
-
-	assert(no < (unsigned)SLT_Reserved);
-
-	bm += (no >> 3);
-	b = (0x80 >> (no & 7));
-	if (act == BSET)
-		*bm |= b;
-	else if (act == BCLR)
-		*bm &= ~b;
-	return (*bm & b);
-}
-
-static void
-tweak_vsl_mask(struct cli *cli, const struct parspec *par, const char *arg)
-{
-	int i, n;
-	unsigned j;
-	const char *s;
-	char **av;
-	(void)par;
-
-	if (arg != NULL) {
-		if (!strcmp(arg, "default")) {
-			(void)vsl_bit(SLT_VCL_trace, BSET);
-			(void)vsl_bit(SLT_WorkThread, BSET);
-			(void)vsl_bit(SLT_Hash, BSET);
-		} else if (*arg != 0) {
-			av = VAV_Parse(arg, &n, ARGV_COMMA);
-			if (av[0] != NULL) {
-				VCLI_Out(cli, "Cannot parse: %s\n", av[0]);
-				VCLI_SetResult(cli, CLIS_PARAM);
-				return;
-			}
-			for (i = 1; av[i] != NULL; i++) {
-				s = av[i];
-				if (*s != '-' && *s != '+') {
-					VCLI_Out(cli,
-					    "Missing '+' or '-' (%s)\n", s);
-					VCLI_SetResult(cli, CLIS_PARAM);
-					VAV_Free(av);
-					return;
-				}
-				for (j = 0; j < 256; j++)
-					if (VSL_tags[j] != NULL &&
-					    !strcasecmp(s + 1, VSL_tags[j]))
-						break;
-				if (j == 256) {
-					VCLI_Out(cli,
-					    "Unknown VSL tag (%s)\n", s);
-					VCLI_SetResult(cli, CLIS_PARAM);
-					VAV_Free(av);
-					return;
-				}
-				if (s[0] == '+')
-					(void)vsl_bit(j, BCLR);
-				else
-					(void)vsl_bit(j, BSET);
-			}
-			VAV_Free(av);
-		}
-	} else {
-		s = "";
-		for (j = 0; j < (unsigned)SLT_Reserved; j++) {
-			if (vsl_bit(j, BTST)) {
-				VCLI_Out(cli, "%s-%s", s, VSL_tags[j]);
-				s = ",";
-			}
-		}
-		if (*s == '\0')
-			VCLI_Out(cli, "(all enabled)");
-	}
-}
-
-const struct parspec VSL_parspec[] = {
-	{ "vsl_mask", tweak_vsl_mask, NULL, 0, 0,
-		"Mask individual VSL messages from being logged",
-		0, "default", "" },
-	{ NULL, NULL, NULL }
-};



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