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authorErlang/OTP <[email protected]>2009-11-20 14:54:40 +0000
committerErlang/OTP <[email protected]>2009-11-20 14:54:40 +0000
commit84adefa331c4159d432d22840663c38f155cd4c1 (patch)
treebff9a9c66adda4df2106dfd0e5c053ab182a12bd /lib/erl_interface/src/decode/decode_trace.c
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The R13B03 release.OTP_R13B03
Diffstat (limited to 'lib/erl_interface/src/decode/decode_trace.c')
-rw-r--r--lib/erl_interface/src/decode/decode_trace.c43
1 files changed, 43 insertions, 0 deletions
diff --git a/lib/erl_interface/src/decode/decode_trace.c b/lib/erl_interface/src/decode/decode_trace.c
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+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 1998-2009. All Rights Reserved.
+ *
+ * The contents of this file are subject to the Erlang Public License,
+ * Version 1.1, (the "License"); you may not use this file except in
+ * compliance with the License. You should have received a copy of the
+ * Erlang Public License along with this software. If not, it can be
+ * retrieved online at http://www.erlang.org/.
+ *
+ * Software distributed under the License is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ * the License for the specific language governing rights and limitations
+ * under the License.
+ *
+ * %CopyrightEnd%
+ */
+#include "eidef.h"
+#include "putget.h"
+
+int ei_decode_trace(const char *buf, int *index, erlang_trace *p)
+{
+ int arity = 0;
+ int tindex = *index;
+
+ /* use a temporary index if any function should fail */
+
+ /* { Flags, Label, Serial, FromPid, Prev } */
+ if (ei_decode_tuple_header(buf, &tindex, &arity)
+ || (arity != 5)
+ || ei_decode_long(buf, &tindex, &p->flags)
+ || ei_decode_long(buf, &tindex, &p->label)
+ || ei_decode_long(buf, &tindex, &p->serial)
+ || ei_decode_pid( buf, &tindex, &p->from)
+ || ei_decode_long(buf, &tindex, &p->prev)) return -1;
+
+ /* index is updated by the functions we called */
+
+ *index = tindex;
+
+ return 0;
+}