This change introduces simple stack measuring by coloring the stack
before doing the actual JS work.
The dynamic linking should be avoided as it will use the stack during
the symbol resolving.
At this moment the `JERRY_STACK_MEASURE` compile time define will enable
the measurement for the jerry-test binary.
A usable build configuration:
```
./tools/build.py --jerry-cmdline-test=on --compile-flag=-DJERRY_STACK_MEASURE=1 --compile-flag=-static
```
JerryScript-DCO-1.0-Signed-off-by: Peter Gal pgal.usz@partner.samsung.com
Overflows in conversions from floating-point to integer are
undefined behavior in the C99 standard. (Clause 6.3.1.4: "If the
value of the integral part cannot be represented by the integer
type, the behavior is undefined.")
When UBSAN is enabled, this gets reported at `srand()` calls. (The
random seed is usually initialized using the date port API, which
represents dates as `double`s. But `srand` takes an `unsigned int`.
A simple cast from `double` to `unsigned` becomes undefined
behavior if the value is too large. And "now" is too large
nowadays. So, effectively, all executions start with an undefined
behavior.)
This patch fixes this by casting the floating-point value of the
date to an integer through a union.
JerryScript-DCO-1.0-Signed-off-by: Akos Kiss akiss@inf.u-szeged.hu
In the snapshot tool the files were opened
in text mode. However the snapshot files
are binary files thus it is advised to use the
binary mode when opening the files.
Specifying the binary mode is a must on Windows
platform otherwise the read/write operations
are inserting extra '\r' characters.
To make the tools consitent across OSes all
fopen are now opening files in binary mode.
Also update jerry-libc to accept the 'b'
modifier and add a test case where the JS
file uses CR-LF line endings.
JerryScript-DCO-1.0-Signed-off-by: Peter Gal pgal.u-szeged@partner.samsung.com
Remove jerry_parse_named_resource, merge its arguments to jerry_parse
and change is_strict argument to an option list for possible future extensions.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
Some benchmark suites contain test cases that have nonreproducible
behaviour. This is mostly caused by relying on "now" when dealing
with dates or timestamps, instead of using a fixed moment. (A
notorious example is the crypto-aes.js test case of the sunspider
bechmark suite, where the heap memory consumption can vary between
34K-41K heap because of using `(new Date()).getTime()`.)
This commit renames the jerry-minimal command line tool to
jerry-test (to better reflect its purpose) and adds extra code,
which intercepts some calls to libc (`gettimeofday`, `rand`) and
pins their results to some fixed values. This makes the tool
useless in a general case but ensures stable results when
benchmarking -- for which it is mostly used.
As a side effect, the commit also changes jerry-libc by making all
libc functions weak symbols to allow their override from
application code.
JerryScript-DCO-1.0-Signed-off-by: Akos Kiss akiss@inf.u-szeged.hu
Péter Gál