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      1 #!/bin/bash
      2 # Copyright 2012 the V8 project authors. All rights reserved.
      3 # Redistribution and use in source and binary forms, with or without
      4 # modification, are permitted provided that the following conditions are
      5 # met:
      6 #
      7 #     * Redistributions of source code must retain the above copyright
      8 #       notice, this list of conditions and the following disclaimer.
      9 #     * Redistributions in binary form must reproduce the above
     10 #       copyright notice, this list of conditions and the following
     11 #       disclaimer in the documentation and/or other materials provided
     12 #       with the distribution.
     13 #     * Neither the name of Google Inc. nor the names of its
     14 #       contributors may be used to endorse or promote products derived
     15 #       from this software without specific prior written permission.
     16 #
     17 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     18 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     19 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     20 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     21 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     22 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     23 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     24 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     25 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     26 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     27 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28 
     29 # Checks that the number of compilation units having at least one static
     30 # initializer in d8 matches the one defined below.
     31 
     32 # Allow:
     33 #  - _GLOBAL__I__ZN2v810LineEditor6first_E
     34 #  - _GLOBAL__I__ZN2v88internal32AtomicOps_Internalx86CPUFeaturesE
     35 #  - _GLOBAL__I__ZN2v88internal8ThreadId18highest_thread_id_E
     36 expected_static_init_count=3
     37 
     38 v8_root=$(readlink -f $(dirname $BASH_SOURCE)/../)
     39 
     40 if [ -n "$1" ] ; then
     41   d8="${v8_root}/$1"
     42 else
     43   d8="${v8_root}/d8"
     44 fi
     45 
     46 if [ ! -f "$d8" ]; then
     47   echo "d8 binary not found: $d8"
     48   exit 1
     49 fi
     50 
     51 static_inits=$(nm "$d8" | grep _GLOBAL_ | grep _I_ | awk '{ print $NF; }')
     52 
     53 static_init_count=$(echo "$static_inits" | wc -l)
     54 
     55 if [ $static_init_count -gt $expected_static_init_count ]; then
     56   echo "Too many static initializers."
     57   echo "$static_inits"
     58   exit 1
     59 else
     60   echo "Static initializer check passed ($static_init_count initializers)."
     61   exit 0
     62 fi
     63