ThreadX still declares 6.5.1.202602 with hotfix 'a', which is the previous
release rather than the one being cut.
prepare_release.sh updated the five version constants in tx_api.h and the
version string in 211 port headers across ports, ports_smp, ports_arch and
ports_module. The hotfix letter is cleared, since the target has none. Nothing
else changed: every line in the port commit carries a version, and no file
outside an inc/tx_port.h was touched.
The port consistency checks passed before the branch was cut, which is what the
script gates on. Host regression 113/113 with zero warnings, and the AI
disclosure check passes.
Assisted-by: Claude Code (Opus 5) <noreply@anthropic.com>
Fixes#61
Object names are exposed as writable pointers throughout the kernel API, which
rejects string literals in C++ and lets a caller modify a name an object still
holds. Information services return those names through writable double
pointers.
Create services, control blocks, information services, the module manager and
trace registration now preserve const qualification, behind
TX_ENABLE_CONST_NAMES. The option defaults to off, so a build that says nothing
gets exactly the types it got before. It is opt-in rather than opt-out because
it changes the type of a public struct field: application code that copies a
name into a writable CHAR * stops compiling, which is a reasonable thing to ask
of a minor release and not of a patch one. Issue #780 tracks making it the
default in 6.6.
Two things the option reaches that its own call sites do not.
TX_CHAR_TO_UCHAR_POINTER_CONVERT has exactly two users, both of them reading an
object name in _tx_trace_object_register, and every form of that macro but the
MISRA one casts the qualifier away without saying so; the conversion is now
const in and const out, so nothing launders const to make the build pass. The
FreeRTOS adapter holds the name pcTaskGetName retrieves in a TX_NAME_CONST
pointer so that it tracks whichever declaration tx_thread_info_get has, and
keeps its writable return type through an explicit MISRA C:2012 Rule 11.8 cast,
because that signature is part of the FreeRTOS API.
Default build: all seven host configurations and all five SMP configurations
build with zero warnings and pass -- 113/113 on five host configurations,
100/100 on the two MISRA builds, 118/118 on SMP, 3/3 FreeRTOS. With
TX_ENABLE_CONST_NAMES set, the host default and both MISRA configurations, the
SMP trace configuration and the FreeRTOS adapter build with zero warnings and
pass.
Co-authored-by: Tilen Majerle <tilen@majerle.eu>
Assisted-by: Codex (gpt-6-astra) <noreply@openai.com>
Assisted-by: Claude Code (Opus 5) <noreply@anthropic.com>
tx_misra.c defines five pointer conversions for the trace component, and their
prototypes sit in tx_trace.h behind TX_SOURCE_CODE. tx_misra.c is the one kernel
source that does not define that macro, so it defines all five with no previous
declaration. Under -Wmissing-declarations -Werror, which the kernel target is
built with, the file does not compile at all, so TX_MISRA_ENABLE and
TX_ENABLE_EVENT_TRACE cannot be enabled together. No build configuration defines
both, which is why this has never surfaced.
The five prototypes move out of the TX_SOURCE_CODE guard into their own block,
next to where tx_api.h already declares _tx_misra_trace_event_insert - the sixth
function of the same region, which escapes the problem for exactly that reason.
Declarations only; no definition moves and no macro changes meaning.
All 185 files in common/src now compile clean under all four combinations of the
two macros with -Wall -Wextra -Wmissing-declarations -Werror, against five errors
in tx_misra.c for the both-enabled case before. Object code is byte identical for
the three combinations that already built: 0 of 185 files differ in each.
Assisted-by: Claude Code (Opus 5) <noreply@anthropic.com>
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The per-edit disclosure named the product and model, so every agent and every
model version appended another line. 74 files carried two to four of them, and
the same five products had accumulated 13 spellings -- Copilot against GitHub
Copilot, Claude Sonnet 4.6 against claude-sonnet-4.6, four spellings of Codex.
Twenty assembly lines carried a doubled comment marker, `; //` or `@ //`.
Every file now carries exactly one line, fixed text naming no product:
Portions of this file were generated with AI assistance.
It is written with the comment character that file already uses, so the `;`
and `@` assembly files keep theirs and the doubled markers are gone. Precise
attribution stays on the commit, where the Assisted-by trailer is per-change,
dated and attached to the diff it describes. A header line cannot hold that
record honestly, because the code it names gets rewritten and the line stays.
A file-level flag answers whether; the history answers who.
Comment-only. 455 files, 455 insertions and 574 deletions: every removed line
was a disclosure line, every added line is the fixed text, and no file is left
with zero or with more than one. `scripts/check_ports.sh` passes, including the
reproducibility check that would catch a ports_arch master and its generated
copies drifting apart. Recompiled against dev, every file that builds without a
vendor toolchain gives a byte-identical object: 19 of 19 C files under common,
100 of 100 GNU assembly files, and all 16 assemblable files whose comment
marker changed. The 10 remaining marker changes are ac5 and IAR sources where
`;` already started the comment and only the redundant `//` was removed.
Assisted-by: Claude Code (Opus 5) <noreply@anthropic.com>
Fixes#723
With `TX_ENABLE_STACK_CHECKING` and `TX_ENABLE_RANDOM_NUMBER_STACK_FILLING` both
enabled, `_tx_thread_create` picked a random byte, stored it in
`tx_thread_stack_fill_value`, filled the stack with it -- and then cleared the
whole control block with `TX_MEMSET`. The stack held the pattern while the
control block claimed zero, so `TX_THREAD_STACK_CHECK` and
`_tx_thread_stack_analyze` compared against the wrong value for the entire life
of the thread.
The value is now computed into a local and written back after the clear. The
clear stays where it is, because the module manager's error checking walks the
created list before the control block may be touched.
Fixed in `common/src/tx_thread_create.c`, `common_smp/src/tx_thread_create.c`
and `txm_module_manager_thread_create.c`, where it additionally left a user-mode
module thread's kernel stack filled with zeros.
`threadx_thread_stack_fill_value_test` creates sixteen unstarted threads and
checks each control block against the pattern in its stack, tolerating a random
zero byte without letting that hide the defect. Added to both suites: `ERROR #3`
on `dev` in `stack_checking_rand_fill_build`, green with the fix. Five tx
configurations at 104 tests, five SMP at 117, and all three sources clean under
`-Wall -Wextra` across every combination of the four stack-filling switches.
Assisted-by: Copilot (Opus 5) <noreply@github.com>
Fixes#224
`_txe_timer_change` returned `TX_CALLER_ERROR` for any call at or above
`TX_INITIALIZE_IN_PROGRESS`, making `tx_timer_change` the only timer service
that could not be called from `tx_application_define` -- while still being
allowed from an ISR.
The check has no technical basis: `_tx_timer_change` only writes the expiration
fields of a timer that is not on an active list, with interrupts disabled.
Removed it from both the `common` and `common_smp` copies of
`txe_timer_change.c`, with the now-unused includes and the `TX_CALLER_ERROR`
line in the header comment. Relaxing an error check is backward compatible.
`testcontrol.c` in both suites now calls `tx_timer_change` at initialization, so
the timer simple test covers it: `ERROR #30` on `dev`, green with the fix.
116/116 SMP, 103/103 non-SMP.
Assisted-by: Copilot (Opus 5) <noreply@github.com>
Fixes#460
`TX_ULONG_POINTER_DIF` casts the pointer difference to `ULONG`, so when
`tx_thread_stack_highest_ptr` sits below `tx_thread_stack_start` the midpoint
wraps to a huge value, the probe lands outside the stack, and the search never
converges: the caller hangs or faults.
`_tx_thread_stack_analyze` now requires the highest pointer to be strictly above
the start of the stack, and bounds the final scan by it. #464 covered the
`TX_THREAD_STACK_CHECK` path; this covers direct callers too, as
@billlamiework suggested on the issue.
Inconsistent pointers still mean a real overflow or a corrupted control block,
which remains the application's problem. What changes is that ThreadX reports it
through the stack error handler instead of hanging.
New cases for an inverted and an equal pointer pair crash the suite without the
fix and pass with it.
Assisted-by: Copilot (Opus 5) <noreply@github.com>
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When TX_NOT_INTERRUPTABLE is defined, _tx_thread_sleep did not set
tx_thread_suspend_status to TX_SUCCESS before calling
_tx_thread_system_ni_suspend. The interruptable path always did.
Nothing else writes that field on behalf of a sleeping thread:
_tx_thread_timeout resumes a TX_SLEEP thread directly and there is no
suspend cleanup routine for sleep. The value therefore survived from
whatever suspension the thread performed last, and tx_thread_sleep
returned it. A tx_semaphore_get that timed out with TX_NO_INSTANCE
would be followed by a tx_thread_sleep that also returned
TX_NO_INSTANCE after sleeping correctly.
The same change is applied to the SMP copy, which is identical.
Assisted-by: Copilot (Opus 5) <noreply@github.com>
_tx_thread_shell_entry and _tx_thread_terminate both publish a thread's
terminal state -- TX_COMPLETED or TX_TERMINATED -- and then call that
thread's exit notification callback, before the thread has been detached
from the ready list and before either service has finished with the pointer
it holds to the control block. That terminal state is exactly the state
_tx_thread_delete and _tx_thread_reset accept as authorization to
invalidate or rebuild the control block, and neither service tested whether
the transition producing it had finished.
A callback could therefore delete the thread it was called for -- and then
lawfully recreate it over the same memory, since delete exists to permit
that -- while the scheduler was still linked to the old incarnation.
tx_thread_create zeroes the whole control block and can auto-start the new
one, so the old priority list is left heading at a block whose own priority
field names a different list, with the old priority's map bit set behind
nothing. Alternatively a callback could reset a terminated thread, which
moves it out of the terminal state, and then resume it: the interrupted-
suspension logic in _tx_thread_system_resume refuses to void a suspension
only while the state is still terminal, so with the reset allowed first the
resume clears the suspending flag and restores TX_READY, the outer service
then finds the flag clear and skips the removal, and tx_thread_terminate
returns TX_SUCCESS for a thread that is runnable again.
Interrupt masking does not close the window, because the kernel restores
the prior posture before invoking the callback deliberately. On SMP
TX_RESTORE also releases the global protection, so the target can be
executing on another core while its callback runs -- and a reset there
memsets the stack a live core is running on. On the Linux, Win32 and Win64
host simulation ports the consequence is more immediate than corruption:
TX_THREAD_DELETE_PORT_COMPLETION cancels and joins the host thread backing
the deleted thread, so a callback-side delete of the completing thread
destroys the host thread the callback is running on.
The fix marks the transition and has the two services refuse a marked
target, returning the errors they already document, TX_DELETE_ERROR and
TX_NOT_DONE. The refusal is transient and the same call succeeds once the
transition has completed, so no documented lifecycle is lost; and it is in
the core services rather than the _txe_ wrappers, so disabling error
checking cannot disable it. Refusing the reset is also what closes the
resume path, without touching _tx_thread_system_resume: its existing
terminal-state test is sufficient once nothing can turn the terminal state
into TX_SUSPENDED from inside the window.
tx_thread_suspending is the marker, rather than a new control-block field.
It already means "a suspension is in progress" and is already true across
the callback in the two interruptable paths, so no field is added, the
public structure is unchanged, and sizeof(TX_THREAD) is unchanged --
which matters, because the Module Manager's object handling depends on the
sizes of the control blocks. Widening its lifetime was checked against
every reader rather than assumed. There are four: two in
_tx_thread_system_suspend and two in _tx_thread_system_resume. In every
window this change widens, the state is TX_COMPLETED or TX_TERMINATED, and
both resume readers already refuse to void a suspension for exactly those
two states, so their behaviour is unchanged; and no suspension routine is
called on the target in those windows, so the suspend readers never see
them. No suspension-initiating service can set the marker again inside a
window either: every one of them acts on a thread that is ready or
suspended.
Three sites needed changing beyond the two refusals, and the shape of each
was decided by where the marker can safely be cleared:
- The non-ready branch of _tx_thread_terminate cleared the marker before
the terminated extension and the callback, which is what left them free
to act on a control block the service still had mutex-release
processing to do against. The clear moves to the common tail, after the
last dereference of the target, and becomes the single clear site for
the whole service. In the interruptable ready branch the flag is
already false there, because _tx_thread_system_suspend cleared it when
it detached the thread, so the tail store is a second store of a value
the flag already holds -- cheaper than testing for it, and it keeps one
clear site.
- Under TX_NOT_INTERRUPTABLE neither path set the marker at all, because
that configuration does not use the interruptable suspension path that
sets it. Both now set it before the callback. Interrupts being disabled
there does not help: the callback is reached by a direct call.
- In the TX_NOT_INTERRUPTABLE completion path the marker is cleared
before _tx_thread_system_ni_suspend rather than after it. That call
returns to the scheduler for a thread that is the current thread, which
a completing thread is, and does not come back; clearing afterwards
would leave a normally completed thread marked for ever and therefore
permanently undeletable. Nothing is lost by clearing early there,
because everything from that point to the detachment runs with
interrupts disabled and calls no application code.
The change is the same change twice. All four files are byte-for-byte
identical between common and common_smp at this commit and stay so after
it, so common_smp was written by copying rather than by repeating the
edits. tx_thread_system_suspend.c and tx_thread_system_resume.c, which do
differ between the kernels, are deliberately untouched.
Tests. The in-tree regression test goes to both trees and is byte-for-byte
identical between them. It drives seven scenarios: terminating a ready
non-current target with two peers ready at the same priority, with the
callback attempting the delete and recreating the block if it succeeded;
the same with the callback attempting the reset and then the resume;
terminating a target suspended on a semaphore while owning a mutex, which
is the non-ready branch; natural completion alone at its priority,
including the safe post-completion reset, terminate, delete and recreate at
another priority; self termination; a benign callback, whose notification
count and ordering are unchanged; and the state and boundary cases, where
the new refusal must not fire.
It measures rather than describes. The callback records the published
state, the marker, and the status of every lifecycle service it can reach,
calling the core service as well as the wrapper wherever a refusal is
expected. A snapshot taken under interrupt lockout -- which is the global
SMP protection on an SMP port -- checks that every ready list agrees with
the control blocks it heads, that the priority map agrees with the lists,
and that each execute pointer is a member of the list its own priority
field names. Every walk is bounded, so a corrupted ring costs an assertion
and not a hang, and no test in the suite can hang. Expectations are counted
inside a scenario and gated between scenarios, so a failing kernel reports
how much it failed by without being driven further into its own
corruption.
The consequences are demonstrated from the terminator's context rather than
the completing thread's, which is what makes the pre-fix behaviour an
assertion instead of a wedged simulator. Compiled against the unfixed
sources the test fails 9 of the 24 expectations it reaches in the
uniprocessor tree and 10 of 24 in the SMP tree, and the failures are the
finding: the callback-side delete succeeds, the recreate succeeds, the
consistency snapshot disagrees, the target is neither terminal nor detached
when the service returns, and a peer has left the ready ring the recreated
block hijacked.
The SMP tree gets a second test for the case that needs concurrency. The
victim is excluded to core 1 and spins there without relinquishing while
the controller, excluded to core 0, terminates it, so the callback runs on
one core while the target executes on another. The callback-side reset and
delete must both be refused, and a sentinel written into the unused low end
of the victim's stack must survive -- a reset would have memset the whole
stack before rebuilding the frame. Every wait is bounded, and if the remote
precondition cannot be established the test says so and drops only the
assertions that depend on it rather than reporting a pass it did not earn;
measured over twenty consecutive runs it established the precondition every
time.
TX_NOT_INTERRUPTABLE and TX_DISABLE_ERROR_CHECKING are not among the five
build configurations either tree compiles, and each tree builds the whole
library once per configuration, so neither can be reached from inside the
suites. The lines this change adds under TX_NOT_INTERRUPTABLE are therefore
in no configuration the trees build, and they are where the permanent-
undeletability failure mode lives, so they get their own harness rather
than a compile check: the four sources plus the two error wrappers are
compiled directly into a test executable, once per combination, with
recorders standing behind the scheduler services they call. That is what
makes the marker's value at the moment of detachment directly observable.
It runs 66 expectations under TX_NOT_INTERRUPTABLE, 66 under that with
error checking disabled, 45 under that with notification disabled, and 63
under error checking disabled alone; against the unfixed sources those fail
25, 22, 6 and 20 respectively. The harness lives in the uniprocessor tree
only, because the four sources are identical between the kernels and the
shim replaces the very primitive the SMP port differs in, so a second copy
would compile the same text under the same macros. It is deliberately left
out of the coverage instrumentation, since the same source under different
feature macros has a different line set and merging those would confuse the
union rather than add to it.
Results. Both suites pass in all five configurations with GCC 14: 103 of
103 in the uniprocessor tree, up from 98, and 116 of 116 in the SMP tree,
up from 114. Merged line coverage is 100% in the uniprocessor tree and
5172 of 5183 in the SMP tree, whose eleven uncovered lines are the same
eleven that were uncovered before this change and are in tx_byte_pool_search
and tx_thread_smp_utilities; all four changed files are at 100% line
coverage in both trees, and SMP branch coverage rises from 2819 of 3548 to
2831 of 3556. Cross-compiled with arm-none-eabi-gcc at -Wall -Wextra for
Cortex-M4 against common and for Cortex-A7 SMP against common_smp, all four
files produce no diagnostics at all and an identical warning set to before
the change, under -std=gnu99 and -std=c99 alike -- unlike the module ports,
-std=c99 does not fail on these base ports, and even -Wconversion is clean.
No MISRA deviation is required: explicit comparisons to TX_TRUE, existing
ThreadX types, single-entry and single-exit control flow, no goto, and two
added constant-time tests that change no real-time complexity.
Assisted-by: Claude Code (Opus 5) <noreply@anthropic.com>
The binary search in _tx_thread_stack_analyze() accepted a probe location as
unused as soon as a single word still held TX_STACK_FILL. A word inside an
otherwise used region that simply was never written - the padding of a
partially initialized local array, for example - therefore made the search
move away from the real boundary and report far less stack usage than the
thread had actually consumed, which in turn kept the stack guard from firing.
The probe now walks down from the candidate location and requires
TX_THREAD_STACK_ANALYZE_FILL_WORDS consecutive fill words before it treats
the location as unused, stopping early at the lowest location already known
to hold the fill pattern. The new macro defaults to eight words and can be
overridden in tx_port.h; setting it to one restores the previous behavior.
Holes shorter than the configured run no longer mislead the search, and the
result is unchanged for stacks that contain no such holes.
Assisted-by: Copilot (Opus 5) <noreply@github.com>
Windows x64 port and regression suite
This PR adds the Windows x64 (Win64) simulation port for both the standalone
and SMP variants of ThreadX, along with the full CMake build and test
infrastructure needed to run the regression suite on Windows.
New ports
Win64 standalone (ports/win64/vs_2022): self-contained Windows simulation
port using Win32 threading primitives as virtual cores. Includes CMake
integration, build/test scripts, and MSVC project files.
Win64 SMP (ports/win64_smp/vs_2022): multi-core Windows simulation port.
Supports up to 4 virtual cores backed by Windows host threads.
Scheduler and timer improvements
The initial port used coarse polling and synchronous SuspendThread/ResumeThread
pairs throughout the scheduler hot path. Several rounds of optimization reduced
the SMP regression suite runtime from ~150 s to ~78 s (-48%), with no
regressions:
- Replaced scheduler polling with an event-driven wake path; switched the
simulated timer to one-shot rearming to eliminate catch-up ticks.
- Skip SuspendThread when _tx_thread_preempt_disable != 0 (new suspension
type 3) -- the primary optimization, yielding up to 7.9x speedup on
preemption-heavy tests.
- Skip SuspendThread when a thread is spinning on the Win32 critical section
(suspension type 4), and fix a stale-TLS bug in
_tx_win32_critical_section_obtain that could stamp mutex_access on the
wrong virtual core.
- Added a 2 ms scheduler event timeout (matching the Linux SMP port) to
prevent stalls on any missed SetEvent.
- Enabled high-resolution waitable timers (SetWaitableTimerEx) for accurate
100 Hz tick cadence.
- Increased TX_WIN32_CONTENTION_PAUSE_COUNT from 64 to 256 to reduce
SwitchToThread overhead under heavy CS contention.
Build and test infrastructure
- Hardened the Windows build wrapper (scripts/build_tx.ps1): invoke Ninja
directly for Ninja build trees, fix timeout detection, add a default build
timeout, and limit fallback replay to real timeout cases.
- Added -Clean support to Windows test scripts to remove stale CTest state
before each run.
- Skip Visual Studio DevShell re-entry when the active MSVC environment
already matches the requested architecture.
- Fixed scripts/build_tx.sh (Linux) regression source generation: replaced
brittle exact-string insertion with line-based matching so the interrupt
dispatcher hook is inserted reliably for both simulator ports.
Test suite updates
- Introduced test/tx/regression/threadx_test_port.h with portable macros
(TX_TEST_POINTER_WORD, TX_TEST_STORE_POINTER) for storing pointers in test
arrays on 64-bit targets where ULONG remains 32-bit.
- Adjusted pool-capacity and pointer-storage patterns in regression tests to
use ALIGN_TYPE-sized slots, making the suite correct on 64-bit hosts.
- Restored stricter event flag, sleep, and timer expectations now that
port-level fixes make prior Windows accommodations unnecessary.
- Tightened SMP watchdog and clean-build timeout defaults.
Version metadata
Updated Win32, Win64, and Win64 SMP port version strings to 6.5.1.202602.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Codex (gpt 5.5) <codex@openai.com>
* Fixed race condition and message loss in Cortex-M GNU, AC6, and IAR ports (#516)
- Added compiler memory barriers to BASEPRI management functions in tx_port.h.
- Added architectural barriers (DSB/ISB) to scheduler return paths in tx_port.h and tx_thread_system_return.S to prevent fall-through before context switch.
- These changes address spurious thread resumption and lost messages, especially when TX_NOT_INTERRUPTABLE is enabled.
- These changes ensure that pending interrupts (specifically PendSV) are recognised before subsequent instructions are executed, following Kairalite's feedback and ARM architectural guidelines.
Assisted-by: Gemini (Gemini 2.0 Flash)
-----
* Added a comment in common/tx_queue_cleanup to document why the NI path omits revalidation guards
- In `TX_NOT_INTERRUPTABLE` mode, the caller keeps interrupts disabled across the entire cleanup call, so the race window that makes the guards necessary in the interruptable path cannot occur. Add a comment explaining this, and noting that all paths that resume a suspended thread clear tx_thread_suspend_cleanup before calling
_tx_thread_system_ni_resume, making double-cleanup impossible.
This prevents future false-positive suggestions (e.g. from AI tools) to add redundant checks to the NI path.
Relates to: eclipse-threadx/threadx#516
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Summary
-------
This commit fixes the issue #424
Details
--------
- Add a the configuration option TX_QUEUE_MESSAGE_MAX_SIZE in the tx_api.h with default value
set to TX_ULONG_16 to keep backword compatibility.
- Update the txe_queue_create() to check on TX_QUEUE_MESSAGE_MAX_SIZE rather than TX_ULONG_16
as max message size.
- Add a new unitary test to cover the new change.
cee19603d Include tx_user.h conditionally.
e40e08007 Update owners
d69641273 Update release date and version
394aee52f Add tx_user.h to GNU port assembly files
5cca2ddd0 RISC-V 64 bit port for Microchip
e0f2c373c Link Winmm.lib that required by the high-resolution timer.
6af472a68 Update Win32 port with high resolution timer.
aea7b556a Add DMB ISH barrier inst in ARMv8-A SMP scheduler
19091a262 Add .section .preamble to m3 m4 m7 module ports
ced60e1b7 Add missing parenthesis in ports assembly file
309dc77ca Modules Cortex-A7 IAR new port
c752a4063 Modules Cortex-A7 GNU new port
dc224b90f Fix race condition in tx_thread_wait_abort and update regression test
6e261f5b7 create threadx cmsis-pack
Frédéric Desbiens
Akif Ejaz
Jonathan Blanchard
Guillaume Galeazzi
Haithem Rahmani
TiejunZhou
Bo Chen (from Dev Box)
Xiuwen CaiandTiejunZhou
Tiejun Zhou
Yuxin Zhou
Scott Larson
tameraw
PProvost