For example Number(".") and Number("e5") should be NaN not
zero. Parsing Number("e") caused buffer overflow as well.
Infinity parsing is a bit faster now.
Fixes#1636.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg [email protected]
Some internal properties are incorrectly handled as objects and
marked as visited. This memory overwrite caused random crashes
in IoT.js.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg [email protected]
Two issues were fixed as well: inserting breakpoints before non-directive
prologue strings and the receive can process multiple messages.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg [email protected]
The debugger supports setting breakpoints, execution control (step, next, continue)
and getting backtrace. The communication is WebSocket-based, so a browser can
communicate with JerryScript without any intermediate application.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg [email protected]
JerryScript-DCO-1.0-Signed-off-by: Levente Orban [email protected]
In a previous patch the original null count behaviour of the
property hashmap is just only partially restored. Now it is
restored fully Also another assertion was forgot to be fixed
in another patch, and we do so now.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg [email protected]
Triggering hashmap recreate during property delete may damage the
property chain list, so recreate postponed after the delete is done.
Next attempt to fix#1533.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg [email protected]
There are two types of NULL values in the property hashmap: deleted
entries, and never used entries. The current implementation tracks
only the never used entries, and never scales back the hashmap.
After this patch property delete can also recreate the hashmap, or
remove it entirely if there are too few items in the array.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg [email protected]
* add %TypedArray% intrinsic object
* implement Int8Array
* will implement other types and prototype functions
in the following patches.
JerryScript-DCO-1.0-Signed-off-by: Zidong Jiang [email protected]
It's generally considered a bad programming practice to have function declarations without parameter names.
This is another legacy from the early days of the project. Fix in one go to minimize history disruption.
Used a custom clang-tidy check to create the bulk of the change.
JerryScript-DCO-1.0-Signed-off-by: Tilmann Scheller [email protected]
Extern keywords on function declarations/definitions provide no additional value since function declarations/definitions default to external linkage in C99, e.g. removing them won't change the semantics of the program.
The extern keywords were essentially a legacy from the early days of the project. This commit cleans this up across the whole codebase in one go to minimize history disruption.
The bulk of the changes in this commit were produced by a custom clang-tidy checker.
Note that variables declarations carrying the extern keyword are untouched by this commit since there the presence of the keyword actually has an impact on the semantics of the program.
JerryScript-DCO-1.0-Signed-off-by: Tilmann Scheller [email protected]
Since the project is now hosted at the JS Foundation we can move to unified copyright notices for the project.
Starting with this commit all future contributions to the project should only carry the following copyright notice (except for third-party code which requires copyright information to be preserved):
"Copyright JS Foundation and other contributors, http://js.foundation" (without the quotes)
This avoids cluttering the codebase with contributor-specific copyright notices which have a higher maintenance overhead and tend to get outdated quickly. Also dropping the year from the copyright notices helps to avoid yearly code changes just to update the copyright notices.
Note that each contributor still retains full copyright ownership of his/her contributions and the respective authorship is tracked very accurately via Git.
JerryScript-DCO-1.0-Signed-off-by: Tilmann Scheller [email protected]
Property names were always required a string reference which consumed
a large amount of memory for arrays. This patch reduces this consumption
by directly storing the value part of certain strings.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg [email protected]
This change allows easier access to array length which improves
the performance of inserting new items into an array and there
is no need to allocate length strings anymore. The trade-of is
that array length cannot be cached anymore.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg [email protected]
Free a new bit in the property descriptor by combining internal
and special property types into one group. Also simplify checking
special properties since bit-and operation is not needed anymore.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg [email protected]
The algorithm is the following:
* introduced a counter variable, which value can be [0-4]
* if its value is 0, property hashmap allocation is enabled
* JMEM_FREE_UNUSED_MEMORY_SEVERITY_LOW -> decrease the counter
* JMEM_FREE_UNUSED_MEMORY_SEVERITY_HIGH -> increase the number
* if JMEM_FREE_UNUSED_MEMORY_SEVERITY_HIGH happens twice in a row increase the counter to 4
According to the measurements this algorithm provides better runtime results in low memory conditions.
JerryScript-DCO-1.0-Signed-off-by: István Kádár [email protected]
This patch reduces memory consumption for strings such as "0" or "123"
by 8 bytes and "4294967295" by 16 bytes. The hash computation is changed
for using the lower 16 bits for these strings which is much faster than
converting the value to string first and compute the hash. The trade-of
is a small overhead when strings are created or concatenated.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg [email protected]
The new code does not use value collections which reduces the argument array size by half.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg [email protected]
Instead of allocating a helper object, argument names are appended right
after the arguments objects. This reduces memory consumption and improve
performance as well. In the future this could be further improved by a
bitfield, but that would require a reference to the byte code which
might increase memory consumption in a few corner cases.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg [email protected]
Class and value internal properties are always exists for primitive
types (e.g. Boolean, Regex) so they can be stored right after the
object. This improve property access (since internal properties are
searched by a slow linear algorithm) and reduces memory consumption,
since only 8 byte is allocated for these two properties instead of
16 which is the size of a property pair.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg [email protected]
The new set does not allocate memory when the size of the array is reduced.
Furthermore the [[PutObject]] method directly calls the new length setter.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg [email protected]
This patch changes define own property to search a property only once.
Currently all existing properties are searched at least twice, sometimes
three times which is not optimal.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg [email protected]
The naming convention of the project for `struct`s is
`typedef struct x_t { } x_t`, but only if it has self-recursive
pointer members, otherwise `typedef struct { } x_t` is enough.
This patch applies this style consistently throughout the code
base.
JerryScript-DCO-1.0-Signed-off-by: Akos Kiss [email protected]
Properties are changed to a type and value pair instead of a pointer to an internal
representation. Functions such as ecma_op_object_get_[own_]property do not
return with property pointers anymore.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg [email protected]
The ecma_op_object_get_[own_]property calls should be phased out from
the project eventually and virtual properties should be introduced instead.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg [email protected]
Removing a lot of ECMA_PROPERTY_VALUE_PTR macro calls. The only drawback
is free callbacks for native objects cannot be deleted anymore. Redefining
a free callback is a rare case, so this trade-of is acceptable.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg [email protected]
Zoltan Herczeg