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improved test suite
updated docs for CCACHE_HARDLINK
This commit is contained in:
Andrew Tridgell
parent
25fbe62acc
commit
f243df628c
@ -37,5 +37,8 @@ install:
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clean:
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/bin/rm -f $(OBJS) *~ ccache
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test: test.sh
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./test.sh
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distclean: clean
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/bin/rm -f Makefile config.h config.sub config.log build-stamp config.status
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13
ccache.1
13
ccache.1
@ -189,13 +189,12 @@ The environment variable CCACHE_NLEVELS allows
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you to choose the number of levels of hash in the cache directory\&. The
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default is 2\&. The minimum is 1 and the maximum is 8\&.
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.IP
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.IP "\fBCCACHE_NOLINK\fP"
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.IP "\fBCCACHE_HARDLINK\fP"
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If you set the environment variable
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CCACHE_NOLINK then ccache will not use hard links from the cache
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directory when creating the compiler output and will do a file copy
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instead\&. The main reason for setting this option is to avoid the
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update of the modification time on object files that are the result of
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the same compilation in a different directory\&.
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CCACHE_HARDLINK then ccache will attempt to use hard links from the
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cache directory when creating the compiler output rather than using a
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file copy\&. Using hard links is faster, but can confuse programs like
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\&'make\&' that rely on modification times\&.
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.IP
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.IP "\fBCCACHE_RECACHE\fP"
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This forces ccache to not use any cached
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@ -298,8 +297,6 @@ following conditions need to be met:
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.IP o
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Use the same \fBCCACHE_DIR\fP environment variable setting
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.IP o
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Set the \fBCCACHE_NOLINK\fP environment variable
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.IP o
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Make sure that all users have write permission in the entire
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cache directory (and that you trust all users of the shared cache)\&.
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.IP o
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12
ccache.yo
12
ccache.yo
@ -163,12 +163,11 @@ dit(bf(CCACHE_NLEVELS)) The environment variable CCACHE_NLEVELS allows
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you to choose the number of levels of hash in the cache directory. The
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default is 2. The minimum is 1 and the maximum is 8.
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dit(bf(CCACHE_NOLINK)) If you set the environment variable
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CCACHE_NOLINK then ccache will not use hard links from the cache
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directory when creating the compiler output and will do a file copy
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instead. The main reason for setting this option is to avoid the
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update of the modification time on object files that are the result of
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the same compilation in a different directory.
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dit(bf(CCACHE_HARDLINK)) If you set the environment variable
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CCACHE_HARDLINK then ccache will attempt to use hard links from the
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cache directory when creating the compiler output rather than using a
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file copy. Using hard links is faster, but can confuse programs like
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'make' that rely on modification times.
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dit(bf(CCACHE_RECACHE)) This forces ccache to not use any cached
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results, even if it finds them. New results are still cached, but
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@ -265,7 +264,6 @@ following conditions need to be met:
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itemize(
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it() Use the same bf(CCACHE_DIR) environment variable setting
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it() Set the bf(CCACHE_NOLINK) environment variable
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it() Make sure that all users have write permission in the entire
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cache directory (and that you trust all users of the shared cache).
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it() Tell your users to set a umask that allows group writes
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114
test.sh
114
test.sh
@ -1,10 +1,12 @@
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#!/bin/sh
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# a simple test suite for ccache
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# tridge@samba.org
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COMPILER=cc
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CCACHE=../ccache
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TESTDIR=test.$$
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test_failed() {
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reason="$1"
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echo $1
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@ -17,14 +19,14 @@ test_failed() {
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randcode() {
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outfile="$1"
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nlines=`expr $RANDOM % 100`
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nlines=$2
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i=0;
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(
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while [ $i -lt $nlines ]; do
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echo "int foo$i(int x) { return x; }"
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echo "int foo$nlines$i(int x) { return x; }"
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i=`expr $i + 1`
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done
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) > "$outfile"
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) >> "$outfile"
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}
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@ -39,95 +41,119 @@ checkstat() {
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expected_value="$2"
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value=`getstat "$stat"`
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if [ "$expected_value" != "$value" ]; then
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test_failed "Expected $stat to be $expected_value - got $value"
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test_failed "SUITE: $testsuite TEST: $testname - Expected $stat to be $expected_value got $value"
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fi
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}
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basetests() {
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$CCACHE -z > /dev/null
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echo "starting testsuite $testsuite"
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rm -rf .ccache
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checkstat 'cache hit' 0
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checkstat 'cache miss' 0
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randcode test1.c
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randcode test2.c
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j=0
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rm -f *.c
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while [ $j -lt 32 ]; do
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randcode test$j.c $j
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j=`expr $j + 1`
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done
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testname="BASIC"
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$CCACHE_COMPILE -c test1.c
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checkstat 'cache hit' 0
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checkstat 'cache miss' 1
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testname="BASIC2"
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$CCACHE_COMPILE -c test1.c
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checkstat 'cache hit' 1
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checkstat 'cache miss' 1
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testname="debug"
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$CCACHE_COMPILE -c test1.c -g
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checkstat 'cache hit' 1
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checkstat 'cache miss' 2
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testname="debug2"
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$CCACHE_COMPILE -c test1.c -g
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checkstat 'cache hit' 2
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checkstat 'cache miss' 2
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testname="output"
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$CCACHE_COMPILE -c test1.c -o foo.o
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checkstat 'cache hit' 3
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checkstat 'cache miss' 2
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testname="link"
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$CCACHE_COMPILE test1.c -o test 2> /dev/null
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checkstat 'called for link' 1
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testname="multiple"
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$CCACHE_COMPILE -c test1.c test2.c
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checkstat 'multiple source files' 1
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testname="find"
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$CCACHE blahblah -c test1.c 2> /dev/null
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checkstat "couldn't find the compiler" 1
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testname="bad"
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$CCACHE_COMPILE -c test1.c -I 2> /dev/null
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checkstat 'bad compiler arguments' 1
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testname="c/c++"
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ln -f test1.c test1.ccc
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$CCACHE_COMPILE -c test1.ccc 2> /dev/null
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checkstat 'not a C/C++ file' 1
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testname="unsupported"
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$CCACHE_COMPILE -M foo -c test1.c > /dev/null 2>&1
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checkstat 'unsupported compiler option' 1
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testname="stdout"
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$CCACHE echo foo -c test1.c > /dev/null
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checkstat 'compiler produced stdout' 1
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testname="non-regular"
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$CCACHE_COMPILE -o /dev/zero -c test1.c
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checkstat 'output to a non-regular file' 1
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testname="no-input"
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$CCACHE_COMPILE -c -O2 2> /dev/null
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checkstat 'no input file' 1
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testname="CCACHE_DISABLE"
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CCACHE_DISABLE=1 $CCACHE_COMPILE -c test1.c 2> /dev/null
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checkstat 'cache hit' 3
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$CCACHE_COMPILE -c test1.c 2> /dev/null
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checkstat 'cache hit' 4
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checkstat 'cache hit' 3
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$CCACHE_COMPILE -c test1.c
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checkstat 'cache hit' 4
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testname="CCACHE_CPP2"
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CCACHE_CPP2=1 $CCACHE_COMPILE -c test1.c -O -Wall
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checkstat 'cache hit' 4
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checkstat 'cache hit' 4
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checkstat 'cache miss' 3
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CCACHE_CPP2=1 $CCACHE_COMPILE -c test1.c -O -Wall
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checkstat 'cache hit' 5
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checkstat 'cache hit' 5
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checkstat 'cache miss' 3
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testname="CCACHE_NOSTATS"
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CCACHE_NOSTATS=1 $CCACHE_COMPILE -c test1.c -O -Wall
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checkstat 'cache hit' 5
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checkstat 'cache miss' 3
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testname="CCACHE_RECACHE"
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CCACHE_RECACHE=1 $CCACHE_COMPILE -c test1.c -O -Wall
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checkstat 'cache hit' 5
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checkstat 'cache hit' 5
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checkstat 'cache miss' 4
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# strictly speaking should be 6 - RECACHE causes a double counting!
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checkstat 'files in cache' 8
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checkstat 'files in cache' 8
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$CCACHE -c > /dev/null
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checkstat 'files in cache' 6
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testname="CCACHE_HASHDIR"
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CCACHE_HASHDIR=1 $CCACHE_COMPILE -c test1.c -O -Wall
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checkstat 'cache hit' 5
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checkstat 'cache miss' 5
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@ -138,29 +164,39 @@ basetests() {
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checkstat 'files in cache' 8
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testname="comments"
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echo '/* a silly comment */' >> test1.c
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$CCACHE_COMPILE -c test1.c
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checkstat 'cache hit' 6
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checkstat 'cache miss' 6
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echo 'possible unify bug?'
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# echo '/* another comment */' >> test1.c
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# CCACHE_UNIFY=1 $CCACHE_COMPILE -c test1.c 2> /dev/null
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# checkstat 'cache hit' 7
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# checkstat 'cache miss' 6
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testname="CCACHE_UNIFY"
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CCACHE_UNIFY=1 $CCACHE_COMPILE -c test1.c
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checkstat 'cache hit' 6
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checkstat 'cache miss' 7
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echo '/* another comment */' >> test1.c
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CCACHE_UNIFY=1 $CCACHE_COMPILE -c test1.c
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checkstat 'cache hit' 7
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checkstat 'cache miss' 7
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testname="cache-size"
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for f in *.c; do
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$CCACHE_COMPILE -c $f
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done
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checkstat 'cache hit' 7
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checkstat 'cache miss' 39
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checkstat 'files in cache' 76
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$CCACHE -F 48 -c > /dev/null
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if [ `getstat 'files in cache'` -gt 48 ]; then
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test_failed '-F test failed'
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fi
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echo 'possible -F bug?'
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# $CCACHE -F 2 -c
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# $CCACHE -c
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# checkstat 'files in cache' 2
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checkstat 'files in cache' 10
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testname="zero-stats"
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$CCACHE -z > /dev/null
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checkstat 'cache hit' 0
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checkstat 'cache miss' 0
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testname="clear"
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$CCACHE -C > /dev/null
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checkstat 'files in cache' 0
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@ -172,18 +208,34 @@ basetests() {
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# main program
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rm -rf $TESTDIR
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mkdir $TESTDIR
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cd $TESTDIR
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cd $TESTDIR || exit 1
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mkdir .ccache
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export CCACHE_DIR=.ccache
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testsuite="base"
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CCACHE_COMPILE="$CCACHE $COMPILER"
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basetests
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testsuite="link"
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ln -s ../ccache $COMPILER
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CCACHE_COMPILE="./$COMPILER"
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basetests
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testsuite="hardlink"
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CCACHE_COMPILE="$CCACHE $COMPILER"
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CCACHE_HARDLINK=1 basetests
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testsuite="cpp2"
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CCACHE_COMPILE="$CCACHE $COMPILER"
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CCACHE_CPP2=1 basetests
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testsuite="nlevels4"
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CCACHE_COMPILE="$CCACHE $COMPILER"
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CCACHE_NLEVELS=4 basetests
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testsuite="nlevels1"
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CCACHE_COMPILE="$CCACHE $COMPILER"
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CCACHE_NLEVELS=1 basetests
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cd ..
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rm -rf $TESTDIR
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