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2017-10-12erts: Fix lock order when recv tracing trapped exit signalLukas Larsson
2017-10-11Don't allow null chars in various stringsRickard Green
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.
2017-10-11Add zlib:set_controlling_process/2John Högberg
2017-10-11Eliminate warnings for ignoring the result of an expressionBjörn Gustavsson
2017-10-10Explicitly disable HiPE's range analysisKostis Sagonas
when/if compiling this file to native code to check its exception behaiour. Related to the discussion in #1586.
2017-10-09Slightly speed up try/catchBjörn Gustavsson
The try_end and try_case instructions are implemented the same way (try_case is translated to try_end by the loader). We can do better than that. We know that try_case will only be executed when an exception has been caught. Therefore, we know that x(0) is the non-value and that x(1) through x(3) need to be shifted down to x(0) through x(2). There is no need to test x(0) before shifting down. try_end does not need the register shifting code at all.
2017-10-09Merge branch 'sverker/bad-dist-msg-bug/ERIERL-80/OTP-14661' into maint-20Erlang/OTP
* sverker/bad-dist-msg-bug/ERIERL-80/OTP-14661: erts: Fix bug when detecting bad dist message Add distribution_SUITE:bad_dist_ext_size
2017-10-09erts: Make a copy of erl_poll.c to help debuggersLukas Larsson
Especially lldb seems to get very confused when the same source file is used by two different object files.
2017-10-09erts: Fix caller trace for apply bifsLukas Larsson
Bifs that are called through the export entry using i_call_last could have their cp set to return_trace, just like any other call. So we have to unwind the trace stack to get the correct cp. Not doing this creates a lot of issues for fprof.
2017-10-09Merge branch 'bjorn/erts/pack-with-opcode/OTP-14325'Björn Gustavsson
OTP-14327 OTP-14340 * bjorn/erts/pack-with-opcode/OTP-14325: Pack operands for combined instructions into the instruction word beam_makeops: Use named arguments for the code generation functions Optimize packing for "optional use" operands beam_makeops: Print the instruction name for fatal packing errors Introduce a syntax for marking operands as "optional use" beam_makeops: Refactor parsing of specific instructions Optimize instruction prefetch Pack operands into the instruction word Use 32-bits pointers to C code Move LD flags for hipe from Makefile.in to configure.in beam_disasm: Correct printing of y registers ops.tab: Slightly optimize badmatch on a Y register macros.tab: Fix assertion in SET_I_REL()
2017-10-09Pack operands for combined instructions into the instruction wordBjörn Gustavsson
The operands for the first part of a combined instruction (the entry point following the OpCase() label) can safely be packed into the instruction word. This commit will make each of the following instructions one word shorter: bs_context_to_binary_x i_band_xcjtd i_bs_get_binary_all_reuse_xft i_bs_get_integer_imm_xWtftx i_bs_get_integer_small_imm_xWftx i_bs_init_bits_fail_xjtx i_bs_init_bits_fail_yjtx i_bs_init_bits_fail_heap_sIjtx i_bs_init_bits_heap_WItx i_bs_init_fail_xjtx i_bs_init_fail_yjtx i_bs_init_fail_heap_sIjtx i_bs_init_heap_WItx i_bs_start_match2_xfttx i_bs_start_match2_yfttx i_element_xjsd i_element_yjsd i_fast_element_xjId i_fast_element_yjId i_increment_xWtd i_increment_yWtd i_jump_on_val_xfIW i_jump_on_val_yfIW i_jump_on_val_zero_xfI i_jump_on_val_zero_yfI i_minus_xxjtd i_plus_xxjtd i_plus_xyjtd i_put_tuple_xI i_put_tuple_yI i_rem_xxjtd i_select_tuple_arity_xfI i_select_tuple_arity_yfI i_select_tuple_arity2_xfAA i_select_tuple_arity2_yfAA i_select_val2_xfcc i_select_val2_yfcc i_select_val_bins_xfI i_select_val_bins_yfI i_select_val_lins_xfI i_select_val_lins_yfI
2017-10-09beam_makeops: Use named arguments for the code generation functionsBjörn Gustavsson
The number of arguments has become unwieldy.
2017-10-05Merge branch 'lukas/erts/beam-emu-vars'Lukas Larsson
* lukas/erts/beam-emu-vars: erts: Add makefile target to check emu register allocation
2017-10-05Optimize packing for "optional use" operandsBjörn Gustavsson
Operands that are marked with a "?" are not always used when an instruction is executed. Enhance the packing algorithm to place optional use operands into the instruction word even they are not the first operand (as long as the total instruction size stays the same). Here are the instructions that will be packed differently because of this change: allocate_heap t I t? allocate_heap_zero t I t? test_heap I t? i_bs_get_integer_8 x f? x i_bs_get_integer_16 x f? x i_bs_get_integer_32 x f? x
2017-10-05beam_makeops: Print the instruction name for fatal packing errorsBjörn Gustavsson
Having the instruction name available in the functions that implement packing also simplifies debugging.
2017-10-05Introduce a syntax for marking operands as "optional use"Björn Gustavsson
Introduce a syntax to mark an operand that is not always used when an instrution is executed. Example of such operands are the fail label for is_nil or the number of live registers for an allocate instruction. Use a question mark to annotate optional use: is_nil f? xy allocate t t?
2017-10-05beam_makeops: Refactor parsing of specific instructionsBjörn Gustavsson
2017-10-05Optimize instruction prefetchBjörn Gustavsson
2017-10-05Pack operands into the instruction wordBjörn Gustavsson
On 64-bit machines where the C code is always at address below 4Gb, pack one or more operands into the instruction word.
2017-10-05Use 32-bits pointers to C codeBjörn Gustavsson
On a 64-bit machine, we only need 32 bits to store a pointer to the C code that implements a BEAM instruction. Refactor the code to only use the lower 32 bits of each instruction word, and take care to preserve the high 32 bits.
2017-10-05Move LD flags for hipe from Makefile.in to configure.inBjörn Gustavsson
We want the flags to be available for other tests in configure.in.
2017-10-05beam_disasm: Correct printing of y registersBjörn Gustavsson
2017-10-05ops.tab: Slightly optimize badmatch on a Y registerBjörn Gustavsson
2017-10-05macros.tab: Fix assertion in SET_I_REL()Björn Gustavsson
9a50a5d5fc1 changed the update of I, but forgot to update the preceding assertion.
2017-10-02Merge branch 'maint'Sverker Eriksson
2017-10-02Merge branch 'sverker/bad-dist-msg-bug/ERIERL-80/OTP-14661' into maintSverker Eriksson
2017-10-02erts: Fix bug when detecting bad dist messageSverker Eriksson
We can't just leave it in queue with dist_ext=NULL. Two symptoms seen: 1. 'receive' trying to deref dist_ext as NULL. 2. GC think it's a term and put THE_NON_VALUE in root set.
2017-10-02Add distribution_SUITE:bad_dist_ext_sizeSverker Eriksson
2017-10-02Merge branch 'maint'John Högberg
2017-10-02Merge branch 'maint-20' into maintJohn Högberg
2017-10-02Merge branch 'bjorn/erts/improve-beam-ops'Björn Gustavsson
* bjorn/erts/improve-beam-ops: Move out variables from the head of combined instructions Change operand from 'P' to 'Q' for i_apply_last and i_apply_fun_last Add CHECK_ALIGNED() for testing storage destinations instrs.tab: Add missing -no_next directives beam_load.c: Generalize the 'P' operator in the packing engine Break out most of the initialization from process_main() Eliminate the OpCode() macro Eliminate unnecessary and inconsistent casts Refactor macros for accessing Beam instructions beam_emu: Make order of macros consistent beam_SUITE: Strengthen test of packed registers
2017-10-02Merge pull request #1589 from bjorng/bjorn/erts/instruction-offsetsBjörn Gustavsson
Point out the correct line number in stack traces
2017-10-02Merge branch 'maint'Rickard Green
* maint: Don't allow null in filenames
2017-10-02Merge branch 'lukas/erts/poll-thread/OTP-14346'Lukas Larsson
* lukas/erts/poll-thread/OTP-14346: (25 commits) erts: Trigger ready events when erts_io_control fails erts: enif_select steal test kernel: Rewrite gen_udp_SUITE:read_packet tc erts: disable kernel-poll on OS X vsn < 16 erts: Fix msacc testcase with new poll-thread erts: Add testcases to test IOp and IOt options erts: get_internal_state(check_io_debug) now prints to error_logger erts: Remove eager check io erts: Move all I/O polling to a seperate thread erts: Fix smp_select testcase to use ERL_DRV_USE erts: Fix msacc unmanaged state counter erts: Optimize port_task quick allocator erts: Add ERTS_THR_PREF_QUICK_ALLOC_IMPL erts: Update suspend of scheduler to handle multiple pollsets erts: Add multiple poll sets erts: Some code cleanup for gdb to work better erts: temp_alloc can no longer be disabled erts: Refactor check_io to use one static struct erts: Replace check_io spinlock with lock-less list insertion erts: Add number of enif_select's to check_io_debug ...
2017-10-02erts: Trigger ready events when erts_io_control failsLukas Larsson
2017-10-02erts: enif_select steal testDmytro Lytovchenko
2017-10-02erts: disable kernel-poll on OS X vsn < 16Lukas Larsson
kqueue is broken on earlier versions of OS X.
2017-10-02erts: Fix msacc testcase with new poll-threadLukas Larsson
2017-10-02erts: Add testcases to test IOp and IOt optionsLukas Larsson
2017-10-02erts: get_internal_state(check_io_debug) now prints to error_loggerLukas Larsson
2017-10-02erts: Remove eager check ioLukas Larsson
It is not longer relevant when using the poll thread
2017-10-02erts: Move all I/O polling to a seperate threadLukas Larsson
2017-10-02erts: Fix smp_select testcase to use ERL_DRV_USELukas Larsson
This is needed with the new poll-thread implementation as now closed fd's in the pollset will be triggered much faster than before.
2017-10-02erts: Fix msacc unmanaged state counterLukas Larsson
OTP-14652
2017-10-02erts: Optimize port_task quick allocatorSverker Eriksson
for non scheduler threads by using ERTS_THR_PREF_QUICK_ALLOC_IMPL.
2017-10-02erts: Add ERTS_THR_PREF_QUICK_ALLOC_IMPLSverker Eriksson
usable from any (managed?) thread.
2017-10-02erts: Update suspend of scheduler to handle multiple pollsetsRickard Green
2017-10-02erts: Add multiple poll setsSverker Eriksson
2017-10-02erts: Some code cleanup for gdb to work betterLukas Larsson
2017-10-02erts: temp_alloc can no longer be disabledLukas Larsson
temp_alloc is used in such a way that if it ever results in a malloc/free sequence it will slow down the system alot. So it will no longer be possible to disable it and it will not be disabled when using +Mea min. OTP-14651
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