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Rework the engine's internal recursion limit (#2969)

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This patch unifies the recursion limit checking for RegExp, function call and JSON as well.
Until now the limit was only a counter which was increased/decreased at certain points.
This counter has been substituted with a numeric limit which allows to restrict the stack usage.

This patch fixes #2963 and resolves the closed #2258 issue.

Co-authored-by: Gabor Loki loki@inf.u-szeged.hu
JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu
This commit is contained in:
Robert Fancsik
2019-07-23 15:31:37 +02:00
committed by GitHub
parent f53dba1a3a
commit 4a9e185840
20 changed files with 156 additions and 216 deletions
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tools/build.py
+3 -11
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@@ -120,6 +120,8 @@ def get_arguments():
help='enable logging (%(choices)s)')
coregrp.add_argument('--mem-heap', metavar='SIZE', type=int,
help='size of memory heap (in kilobytes)')
coregrp.add_argument('--stack-limit', metavar='SIZE', type=int,
help='maximum stack usage (in kilobytes)')
coregrp.add_argument('--mem-stats', metavar='X', choices=['ON', 'OFF'], type=str.upper,
help=devhelp('enable memory statistics (%(choices)s)'))
coregrp.add_argument('--mem-stress-test', metavar='X', choices=['ON', 'OFF'], type=str.upper,
@@ -128,10 +130,6 @@ def get_arguments():
help='specify profile file')
coregrp.add_argument('--regexp-strict-mode', metavar='X', choices=['ON', 'OFF'], type=str.upper,
help=devhelp('enable regexp strict mode (%(choices)s)'))
coregrp.add_argument('--regexp-recursion-limit', metavar='N', type=int,
help='regexp recursion depth limit')
coregrp.add_argument('--call-stack-limit', metavar='N', type=int,
help='Function call recursion depth limit')
coregrp.add_argument('--show-opcodes', metavar='X', choices=['ON', 'OFF'], type=str.upper,
help=devhelp('enable parser byte-code dumps (%(choices)s)'))
coregrp.add_argument('--show-regexp-opcodes', metavar='X', choices=['ON', 'OFF'], type=str.upper,
@@ -156,11 +154,6 @@ def get_arguments():
parser.print_help()
sys.exit(0)
if arguments.call_stack_limit:
if arguments.call_stack_limit < 0:
print ('Configuration error: Function call recursion limit must be greater or equal than 0')
sys.exit(1)
return arguments
def generate_build_options(arguments):
@@ -202,12 +195,11 @@ def generate_build_options(arguments):
build_options_append('JERRY_LINE_INFO', arguments.line_info)
build_options_append('JERRY_LOGGING', arguments.logging)
build_options_append('JERRY_GLOBAL_HEAP_SIZE', arguments.mem_heap)
build_options_append('JERRY_STACK_LIMIT', arguments.stack_limit)
build_options_append('JERRY_MEM_STATS', arguments.mem_stats)
build_options_append('JERRY_MEM_GC_BEFORE_EACH_ALLOC', arguments.mem_stress_test)
build_options_append('JERRY_PROFILE', arguments.profile)
build_options_append('JERRY_REGEXP_STRICT_MODE', arguments.regexp_strict_mode)
build_options_append('JERRY_REGEXP_RECURSION_LIMIT', arguments.regexp_recursion_limit)
build_options_append('JERRY_CALL_STACK_LIMIT', arguments.call_stack_limit)
build_options_append('JERRY_PARSER_DUMP_BYTE_CODE', arguments.show_opcodes)
build_options_append('JERRY_REGEXP_DUMP_BYTE_CODE', arguments.show_regexp_opcodes)
build_options_append('JERRY_SNAPSHOT_EXEC', arguments.snapshot_exec)