| Age | Commit message (Collapse) | Author |
|---|
|
__declspec(noinline) works fine on MSVC but requires us to place
the macro before a function rather than after, which in turn causes
early versions of GCC to puke since they only accept __attribute__
at the end of a function declaration.
Since this is a new macro that previously only saw use in beam_emu,
I figured it's easiest to leave it disabled on MSVC.
|
|
Fabio Coatti reported elixir build failure in https://bugs.gentoo.org/681778.
The minimal reproducer looks like that (from otp git tree):
$ ./configure CFLAGS='-O2 -flto' LDFLAGS='-O2 -flto=8'
$ make
$ ERL_TOP=$PWD \
PATH=$ERL_TOP/bin:$PATH \
\
bin/erl \
\
-noshell -eval 're:replace("a","b","c",[{return,list}]).' \
-s erlang halt
{"init terminating in do_boot",{badarg,[{re,replace,["a","b","c",[{return,list}]],
[{file,"re.erl"},{line,362}]},
{erl_eval,do_apply,6,[{file,"erl_eval.erl"},{line,680}]},
{init,start_it,1,[]},
{init,start_em,1,[]},
{init,do_boot,3,[]}]}}
init terminating in do_boot ({badarg,[{re,replace,[[_],[_],[_],[_]],[{_},{_}]},
{erl_eval,do_apply,6,[{_},{_}]},{init,start_it,1,[]},{init,start_em,1,[]},{init,do_boot,3,[]}]})
Crash dump is being written to: erl_crash.dump...done
The failure happens in libpcre2 where stack overflow is mis-identified
at function entry of
erts_pcre_compile2()
compile_regex()
if (PUBL(stack_guard) != NULL && PUBL(stack_guard)())
{
*errorcodeptr= ERR85;
return FALSE;
}
The stack "overflow" detection happens in
thr_wrapper()
ethr_set_stacklimit__()
because the stack usage code relies on the fact that ethr_set_stacklimit__()
and similar functions don't get inlined into callers for stack growth
measurement.
Before the change inlining avoidance was achieved by putting functions
into standalone translation units. LTO makes this technique inefficient.
The change marks functions explicitly as __attribute__((__noinline__)) on gcc.
Reported-by: Fabio Coatti
Bug: https://bugs.gentoo.org/681778
Signed-off-by: Sergei Trofimovich <[email protected]>
|
|
Let sys.h define HAVE_OVERFLOW_CHECK_BUILTINS if the compiler supports
__builtin_mul_overflow() and the other overflow checking builtins.
The test is intentionally made in a sys.h and not as a configure test.
On Windows, beam_emu.c is always compiled using gcc, but the other
files are usually compiled with Microsoft's C compiler. With the
test in the header file, HAVE_OVERFLOW_CHECK_BUILTINS will be defined
when compiling beam_emu.c.
|
|
to increase the probablity of a nice badarg
from erlang:port_control.
|
|
|
|
|
|
This also removes a redundant #ifdef soup that had hidden the
problem on most platforms.
|
|
|
|
to avoid argument-evaluated-twice bugs
like in macro DMC_PUSH.
Had to shuffle around some #include and #define
to make erl_child_setup build debug target.
|
|
Passing NULL is undefined behavior and unconditionally executing these
may result in the compiler optimizing away a later NULL check. It can
often work since the pointer isn't touched when the length is 0, but
it's a major footgun. See ERL-573.
|
|
putenv(3) and friends aren't thread-safe regardless of how you slice
it; a global lock around all environment operations (like before)
keeps things safe as far as our own operations go, but we have
absolutely no control over what libc or a library dragged in by a
driver/NIF does -- they're free to call getenv(3) or putenv(3)
without honoring our lock.
This commit solves this by setting up an "emulated" environment which
can't be touched without going through our interfaces. Third-party
libraries can still shoot themselves in the foot but benign uses of
os:putenv/2 will no longer risk crashing the emulator.
|
|
* lukas/erts/use_SIGRTMIN_for_sys_suspend/OTP-14682:
erts: Use SIGRTMIN on linux for sys_suspend
|
|
The Linux real-time signal is better used on Linux
for suspending schedulers during shutdown as it doesn't
collide with SIGUSR2 usage of other applications.
|
|
* rickard/null-chars/ERL-370/OTP-14543:
Don't allow null chars in various strings
Conflicts:
erts/emulator/beam/erl_alloc.types
erts/preloaded/ebin/erlang.beam
|
|
Various places that now reject null chars inside strings
- Primitive file operations reject it in filenames.
- Primitive environment variable operations reject it in
names and values.
- os:cmd() reject it in its input.
Also '=' characters are rejected by primitive environment
variable operations in environment variable names.
Documentation has been updated to document null characters
in these types of data as invalid. Currently these operations
accept null chars at the end of strings, but that will change
in the future.
|
|
|
|
|
|
|
|
# Conflicts:
# erts/emulator/beam/erl_process.c
# erts/emulator/beam/sys.h
# erts/emulator/sys/common/erl_check_io.c
# erts/emulator/sys/common/erl_check_io.h
# erts/emulator/sys/unix/sys.c
|
|
|
|
Besides being noisy, they were already defined by a global Unix-
specific header, causing the Windows build to fail if one forgot to
define them.
|
|
* maint:
Bug fixes of statistics(wall_clock) and statistics(runtime)
Conflicts:
erts/emulator/beam/erl_time_sup.c
|
|
|
|
|
|
This refactor was done using the unifdef tool like this:
for file in $(find erts/ -name *.[ch]); do unifdef -t -f defile -o $file $file; done
where defile contained:
#define ERTS_SMP 1
#define USE_THREADS 1
#define DDLL_SMP 1
#define ERTS_HAVE_SMP_EMU 1
#define SMP 1
#define ERL_BITS_REENTRANT 1
#define ERTS_USE_ASYNC_READY_Q 1
#define FDBLOCK 1
#undef ERTS_POLL_NEED_ASYNC_INTERRUPT_SUPPORT
#define ERTS_POLL_ASYNC_INTERRUPT_SUPPORT 0
#define ERTS_POLL_USE_WAKEUP_PIPE 1
#define ERTS_POLL_USE_UPDATE_REQUESTS_QUEUE 1
#undef ERTS_HAVE_PLAIN_EMU
#undef ERTS_SIGNAL_STATE
|
|
|
|
Support e2k platform
OTP-14492
|
|
* rickard/statistics/OTP-14484:
Fix statistics(wall_clock) and statistics(runtime) implementation
|
|
* maint-19:
Updated OTP version
Update release notes
Update version numbers
Fix statistics(wall_clock) and statistics(runtime) implementation
fixup! erts: Cleanup dropped port tasks correctly
erts: Add tests to detect port close race
Add a testcase for OTP-13939/ERL-193
erts: Cleanup dropped port tasks correctly
Mark socket disconnected on tcp_send_or_shutdown_error
|
|
|
|
|
|
|
|
OTP-14331
* rickard/pcre-8.40:
Update documentation
Update README.pcre_update.md
Stack guard for PCRE
Adjust for incompatibility between PCRE 8.40 and perl 5.22.1
Generate re replacement and split tests with perl vsn 5.22.1
Fix re_SUITE:pcre_compile_workspace_overflow/1
Skip line with lockout of modifiers in PCRE tests
Update tests for PCRE version 8.40
Update PCRE to version 8.40
Conflicts:
erts/emulator/beam/beam_debug.c
|
|
|
|
Allocations and message sending are now scheduled by a signal,
via a signal state bitmap, instead of doing it directly in the signal handler.
|
|
The signal handler will now schedule a sigterm message instead of sending
the message in the signal handler. The signal handler must refrain from
memory allocations and thus the event is scheduled.
|
|
|
|
|
|
* maint:
Atomic reference count of binaries also in non-SMP
Conflicts:
erts/emulator/beam/erl_fun.c
|
|
OTP-14202
* rickard/binary-refc:
Atomic reference count of binaries also in non-SMP
Conflicts:
erts/emulator/beam/beam_bp.c
|
|
NIF resources was not handled in a thread-safe manner in the runtime
system without SMP support.
As a consequence of this fix, the following driver functions are now
thread-safe also in the runtime system without SMP support:
- driver_free_binary()
- driver_realloc_binary()
- driver_binary_get_refc()
- driver_binary_inc_refc()
- driver_binary_dec_refc()
|
|
* move signal handler setup
|
|
* move signal handler setup
|
|
|
|
|
|
for simplify string to 64-bit integer parsing.
|
|
Instead of passing around a file descriptor
use a function pointer to facilitate more advanced
backend write logic such as size limitation or compression.
|
|
(in case it matters)
|
|
that otherwise may produce warning from compilers
that think T* and T[] are incompatible types (?).
|
|
|
