Testing for overflow by adding a value to a variable to see if it "wraps
around" works only for unsigned integer values, because signed overflow
has undefined behavior according to the C and C++ standards.
Signed-off-by: Mingjie Shen <shen497@purdue.edu>
A normal user task calls pthread_exit(), will crash at DEBUGASSERT.
Cause pthread_exit limit in user pthread task.
test case:
int main(int argc, FAR char *argv[])
{
pthread_exit(NULL);
return 0;
}
>> test
>> echo $?
>> 0
Signed-off-by: fangxinyong <fangxinyong@xiaomi.com>
Changes the executable type built against the `make export` target fully linked by default. This greatly improves performance when loading applications, as relocations no longer need to be processed.
This change allows boards to define an additional kconfig option, which specifies the final link format of application executables.
By selecting `CONFIG_BINFMT_ELF_RELOCATABLE`, and providing an appropriate linker script, applications can be fully linked, removing the need to process relocations.
The following warning is emitted when building with GCC 12.2.0:
"the comparison will always evaluate as ‘true’ for the address of ‘g_parm’ will never be NULL [-Waddress]"
As g_param is an array of char[]. each member should have an actual address, so the validation in each if statement is not required.
Allows boards to supply their own gnu-elf linker script, used when building Nuttx applications and CONFIG_BUILD_KERNEL.
This is useful when building fully-linked applications (see #9395).
pthread_cond_wait() should be an atomic operation in the mutex lock/unlock.
Since the sched_lock() has been wrongly deleted in the previous commit,
the context switch will occurred after the mutex was unlocked:
--------------------------------------------------------------------
Task1(Priority 100) | Task2(Priority 101)
|
pthread_mutex_lock(mutex); |
| |
pthread_cond_wait(cond, mutex) |
| | |
| | |
| ->enter_critical_section() |
| ->pthread_mutex_give(mutex) | ----> pthread_mutex_lock(mutex); // contex switch to high priority task
| | pthread_cond_signal(cond); // signal before wait
| | <---- pthread_mutex_unlock(mutex); // switch back to original task
| ->pthread_sem_take(cond->sem)| // try to wait the signal, Deadlock.
| ->leave_critical_section() |
|
| ->pthread_mutex_take(mutex) |
| |
pthread_mutex_lock(mutex); |
---------------------------------------------------------------------
This PR will bring back sched_lock()/sched_unlock() to avoid context switch to ensure atomicity
Signed-off-by: chao an <anchao@xiaomi.com>
LED effects must be implemented in the lower-half of the LED driver.
The interface is designed to supports the following LED effects:
- intenisty (PWM)
- Bling (Timer)
- Fade in, Fade out (Ramp)
The udp connection structure contains the field, "domain", which defines which address family it belongs to. Prior to this change, this field was only populated correctly if IPv4 and IPv6 was enabled. As a result, packet information was not processed in udp_recvpktinfo, as expected when the appropriate socket option was enabled.
1. the killpg function can make all the
ltp/open_posix_testsuite/killpg testcaes passed
2. Nuttx do not support process group, so we use kill process instead
3. the implementation are referred to:
https://pubs.opengroup.org/onlinepubs/9699919799/functions/killpg.html
Signed-off-by: guoshichao <guoshichao@xiaomi.com>
In the default configuration, the Litex ethernet peripheral contains two RX and two TX buffers. The active buffer for the peripheral should be swapped as soon as possible, in order to reduce packet loss.
This modification acknowledges the receive buffer as soon as the pending data is copied into the NuttX device data buffer. Improving reliability under heavy load.
since symbols defined in arch/elf.h is also used in other case, for example:
CC: pthread/pthread_testcancel.c machine/arm/gnu_unwind_find_exidx.c:32:8: error: unknown type name '__EIT_entry'
32 | static __EIT_entry *__exidx_start_elf;
| ^~~~~~~~~~~
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
1. the getpgrp function can help to pass the ltp/open_posix_teststuite/killpg related testcases
2. Nuttx do not support process group, so we use getpid to implement this
3. the implementation are referred to: https://pubs.opengroup.org/onlinepubs/9699919799/functions/getpgrp.html
Signed-off-by: guoshichao <guoshichao@xiaomi.com>
This patch add an example and pyhton base modules:
1.add memdump.py is an example to analyze memory
usage by python script.
2.add The most basic data structure analysis, like list, etc.
future ideas:
Maybe we can add modules related to "sched, drivers, arch, fs.." to
automatically analyze scripts to debug some problems
References:
linux kernel (https://github.com/torvalds/linux/tree/master/scripts/gdb)
The official manual of gdb (https://sourceware.org/gdb/onlinedocs/gdb/Python-API.html)
Change-Id: Ib9025a0a141cb89f3813526f7c55dcb28de31ed9
Signed-off-by: anjiahao <anjiahao@xiaomi.com>
The following macros
__ARCH_ARM_SRC_STM32F7_HARDWARE_STM32F74XX75XX_FLASH_H
__ARCH_ARM_SRC_STM32L4_HARDWARE_STM32L4X6XX_RCC_H
are used in other header files.
Signed-off-by: Mingjie Shen <shen497@purdue.edu>
In this nested loop, the iteration variable is the same for both loops.
This is a typo and the inner loop should use a new loop variable.
Signed-off-by: Mingjie Shen <shen497@purdue.edu>
Memory pointed by priv may be used (in line 1289) after it is
freed in line 1283.
Fix by adding the missing return statement in error handling.
Signed-off-by: Mingjie Shen <shen497@purdue.edu>
It is used to write the log message to the channel immediately
when the log message is generated in the interrupt context, which
is faster than the normal force callback.
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
