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PCRE2: optimize memory allocations #15395

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PCRE2: optimize memory allocations #15395

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f24a948
Regex::PCRE2: set jit stack and match data as ThreadLocal
ysbaddaden Mar 10, 2025
93e141f
LibC: add bindings for pthread local storage
ysbaddaden Jan 31, 2025
4aeeb47
WIP: Thread::Local(T) struct
ysbaddaden Mar 10, 2025
b6ebabc
Regex::PCRE2: use Thread::Local(T) instead of ThreadLocal annotation
ysbaddaden Mar 10, 2025
621fe5f
WIP: extract Thread::Local(T) implementations
ysbaddaden Mar 10, 2025
a14032e
LibC: add bindings for windows FLS API
ysbaddaden Jan 31, 2025
f5da032
fixup! WIP: extract Thread::Local(T) implementations
ysbaddaden Mar 10, 2025
c225013
WIP: try FlsAlloc on windows
ysbaddaden Mar 10, 2025
4b0accf
Add destructor to Thread::Local(T)
ysbaddaden Mar 10, 2025
64458fb
Fix: register destructor to free jit stack and match data on thread t…
ysbaddaden Mar 10, 2025
19f631b
fixup! Add destructor to Thread::Local(T)
ysbaddaden Mar 10, 2025
7487cb5
Windows: go back to TlsAlloc with custom destructor array
ysbaddaden Mar 10, 2025
0cbd5e8
Fix: initializer on wasi
ysbaddaden Mar 11, 2025
9fe3a62
Fix: crystal tool format
ysbaddaden Mar 11, 2025
72961ca
Try FLS on windows again?
ysbaddaden Mar 11, 2025
52f908d
Apply review suggestions
ysbaddaden Mar 17, 2025
8688b4b
cleanup
ysbaddaden Mar 17, 2025
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4 changes: 4 additions & 0 deletions src/crystal/system/thread.cr
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Expand Up @@ -220,12 +220,16 @@ class Thread
rescue ex
@exception = ex
ensure
run_destructors
Thread.threads.delete(self)
Fiber.inactive(fiber)
detach { system_close }
end
end

protected def run_destructors : Nil
end
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todo: cleanup before merge (not needed anymore).


protected def name=(@name : String)
self.system_name = name
end
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33 changes: 33 additions & 0 deletions src/crystal/system/thread_local.cr
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@@ -0,0 +1,33 @@
class Thread
struct Local(T)
# def initialize
# {% raise "T must be a Reference or Pointer" unless T < Reference || T < Pointer %}
# end

# def initialize(&destructor : Proc(T, Nil))
# {% raise "T must be a Reference or Pointer" unless T < Reference || T < Pointer %}
# end
Comment on lines +3 to +9
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@Sija Sija Mar 15, 2025 •
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Perhaps these could be uncommented and then called via super in descendant classes to avoid duplicating the code?

Suggested change
# def initialize
# {% raise "T must be a Reference or Pointer" unless T < Reference || T < Pointer %}
# end
# def initialize(&destructor : Proc(T, Nil))
# {% raise "T must be a Reference or Pointer" unless T < Reference || T < Pointer %}
# end
def initialize
{% raise "T must be a Reference or Pointer" unless T < Reference || T < Pointer %}
end
def initialize(&destructor : Proc(T, Nil))
initialize
end

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It avoids some repetition, but I'm not sure it would improve readability?

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I'm wondering if we could use Box for this? Seems to be exactly the use case. Technically we don't need support for boxing structs onto the heap though. So this draws in additional complexity which we might want to avoid here.

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@ysbaddaden ysbaddaden Mar 17, 2025 •
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Sorry, you lost me @straight-shoota 😕

Do you mean to Box the destructor proc? Oh, to Box the value in case it's not a Pointer/Reference! 😅

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I think it's fine to not support non pointer values. If we ever need to, we'll figure it out then.

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The idea for using Box would be that it might simplify the code for Thread::Local. All explicit casts would become Box(T).box and Box(T).unbox and no need for checking T type in the macro.
I suppose it doesn't simplify that much though.

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But Box always allocates into the GC heap, and we'd put the pointer to the box in the local storage that we'd have to dereference on every get 😕

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Errata: Box doesn't allocate into the GC heap when T is Nil or Reference but we want to store pointers and that will allocate.

Maybe it's an overlook? 🤔


def get : T
get? || raise KeyError.new
end

def get(& : -> T) : T
get? || set(yield)
end

# def get? : T?

# def set(value : T) : T
end
end

{% if flag?(:wasi) %}
require "./wasi/thread_local"
{% elsif flag?(:unix) %}
require "./unix/thread_local"
{% elsif flag?(:win32) %}
require "./win32/thread_local"
{% else %}
{% raise "Thread not supported" %}
{% end %}
30 changes: 30 additions & 0 deletions src/crystal/system/unix/thread_local.cr
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@@ -0,0 +1,30 @@
require "c/pthread"

class Thread
struct Local(T)
@key : LibC::PthreadKeyT

def initialize
{% raise "T must be a Reference or Pointer" unless T < Reference || T < Pointer %}
err = LibC.pthread_key_create(out @key, nil)
raise RuntimeError.from_os_error("pthread_key_create", Errno.new(err)) unless err == 0
end

def initialize(&destructor : Proc(T, Nil))
{% raise "T must be a Reference or Pointer" unless T < Reference || T < Pointer %}
err = LibC.pthread_key_create(out @key, destructor.unsafe_as(Proc(Void*, Nil)))
raise RuntimeError.from_os_error("pthread_key_create", Errno.new(err)) unless err == 0
end
Comment on lines +7 to +17
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@straight-shoota straight-shoota Mar 17, 2025 •
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suggestion: Extract the common code into a helper to remove duplication.

Suggested change
def initialize
{% raise "T must be a Reference or Pointer" unless T < Reference || T < Pointer %}
err = LibC.pthread_key_create(out @key, nil)
raise RuntimeError.from_os_error("pthread_key_create", Errno.new(err)) unless err == 0
end
def initialize(&destructor : Proc(T, Nil))
{% raise "T must be a Reference or Pointer" unless T < Reference || T < Pointer %}
err = LibC.pthread_key_create(out @key, destructor.unsafe_as(Proc(Void*, Nil)))
raise RuntimeError.from_os_error("pthread_key_create", Errno.new(err)) unless err == 0
end
def initialize
create_key
end
def initialize(&destructor : Proc(T, Nil))
create_key destructor
end
private def create_key(destructor = nil)
{% raise "T must be a Reference or Pointer" unless T < Reference || T < Pointer %}
err = LibC.pthread_key_create(out @key, destructor.unsafe_as(Proc(Void*, Nil)))
raise RuntimeError.from_os_error("pthread_key_create", Errno.new(err)) unless err == 0
end

ditto for win32


def get? : T?
pointer = LibC.pthread_getspecific(@key)
pointer.as(T) if pointer
end

def set(value : T) : T
err = LibC.pthread_setspecific(@key, value.as(Void*))
raise RuntimeError.from_os_error("pthread_setspecific", Errno.new(err)) unless err == 0
value
end
end
end
21 changes: 21 additions & 0 deletions src/crystal/system/wasi/thread_local.cr
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@@ -0,0 +1,21 @@
class Thread
struct Local(T)
@value : T?

def initialize
{% raise "T must be a Reference or Pointer" unless T < Reference || T < Pointer %}
end

def initialize(&destructor : T ->)
{% raise "T must be a Reference or Pointer" unless T < Reference || T < Pointer %}
end

def get? : T?
@value
end

def set(value : T) : T
@value = value
end
end
end
30 changes: 30 additions & 0 deletions src/crystal/system/win32/thread_local.cr
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require "c/fibersapi"

class Thread
struct Local(T)
@key : LibC::DWORD

def initialize
{% raise "T must be a Reference or Pointer" unless T < Reference || T < Pointer %}
@key = LibC.FlsAlloc
raise RuntimeError.from_winerror("FlsAlloc: out of indexes") if @key == LibC::FLS_OUT_OF_INDEXES
end

def initialize(&destructor : Proc(T, Nil))
{% raise "T must be a Reference or Pointer" unless T < Reference || T < Pointer %}
@key = LibC.FlsAlloc(destructor.unsafe_as(Proc(Void*, Nil)))
raise RuntimeError.from_winerror("FlsAlloc: out of indexes") if @key == LibC::FLS_OUT_OF_INDEXES
end

def get? : T?
pointer = LibC.FlsGetValue(@key)
pointer.as(T) if pointer
end

def set(value : T) : T
ret = LibC.FlsSetValue(@key, value.as(Void*))
raise RuntimeError.from_winerror("FlsSetValue") if ret == 0
value
end
end
end
1 change: 1 addition & 0 deletions src/lib_c/aarch64-android/c/pthread.cr
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Expand Up @@ -26,6 +26,7 @@ lib LibC
fun pthread_getspecific(__key : PthreadKeyT) : Void*
fun pthread_join(__pthread : PthreadT, __return_value_ptr : Void**) : Int
fun pthread_key_create(__key_ptr : PthreadKeyT*, __key_destructor : Void* ->) : Int
fun pthread_key_delete(__key_ptr : PthreadKeyT) : Int

fun pthread_mutexattr_destroy(__attr : PthreadMutexattrT*) : Int
fun pthread_mutexattr_init(__attr : PthreadMutexattrT*) : Int
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5 changes: 5 additions & 0 deletions src/lib_c/aarch64-darwin/c/pthread.cr
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Expand Up @@ -13,9 +13,13 @@ lib LibC
fun pthread_cond_wait(x0 : PthreadCondT*, x1 : PthreadMutexT*) : Int
fun pthread_create(x0 : PthreadT*, x1 : PthreadAttrT*, x2 : Void* -> Void*, x3 : Void*) : Int
fun pthread_detach(x0 : PthreadT) : Int
fun pthread_getspecific(PthreadKeyT) : Void*
fun pthread_get_stackaddr_np(x0 : PthreadT) : Void*
fun pthread_get_stacksize_np(x0 : PthreadT) : SizeT
fun pthread_join(x0 : PthreadT, x1 : Void**) : Int
alias PthreadKeyDestructor = (Void*) ->
fun pthread_key_create(PthreadKeyT*, PthreadKeyDestructor) : Int
fun pthread_key_delete(PthreadKeyT) : Int
fun pthread_mutexattr_destroy(x0 : PthreadMutexattrT*) : Int
fun pthread_mutexattr_init(x0 : PthreadMutexattrT*) : Int
fun pthread_mutexattr_settype(x0 : PthreadMutexattrT*, x1 : Int) : Int
Expand All @@ -26,4 +30,5 @@ lib LibC
fun pthread_mutex_unlock(x0 : PthreadMutexT*) : Int
fun pthread_self : PthreadT
fun pthread_setname_np(Char*) : Int
fun pthread_setspecific(PthreadKeyT, Void*) : Int
end
1 change: 1 addition & 0 deletions src/lib_c/aarch64-darwin/c/sys/types.cr
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Expand Up @@ -40,6 +40,7 @@ lib LibC
end

type PthreadT = Void*
alias PthreadKeyT = UInt
alias SSizeT = Long
alias SusecondsT = Int
alias TimeT = Long
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5 changes: 5 additions & 0 deletions src/lib_c/aarch64-linux-gnu/c/pthread.cr
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Expand Up @@ -25,8 +25,12 @@ lib LibC
fun pthread_create(newthread : PthreadT*, attr : PthreadAttrT*, start_routine : Void* -> Void*, arg : Void*) : Int
fun pthread_detach(th : PthreadT) : Int
fun pthread_getattr_np(thread : PthreadT, attr : PthreadAttrT*) : Int
fun pthread_getspecific(PthreadKeyT) : Void*
fun pthread_equal(thread1 : PthreadT, thread2 : PthreadT) : Int
fun pthread_join(th : PthreadT, thread_return : Void**) : Int
alias PthreadKeyDestructor = (Void*) ->
fun pthread_key_create(PthreadKeyT*, PthreadKeyDestructor) : Int
fun pthread_key_delete(PthreadKeyT) : Int
fun pthread_mutexattr_destroy(attr : PthreadMutexattrT*) : Int
fun pthread_mutexattr_init(attr : PthreadMutexattrT*) : Int
fun pthread_mutexattr_settype(attr : PthreadMutexattrT*, type : Int) : Int
Expand All @@ -37,4 +41,5 @@ lib LibC
fun pthread_mutex_unlock(mutex : PthreadMutexT*) : Int
fun pthread_self : PthreadT
fun pthread_setname_np(PthreadT, Char*) : Int
fun pthread_setspecific(PthreadKeyT, Void*) : Int
end
1 change: 1 addition & 0 deletions src/lib_c/aarch64-linux-gnu/c/sys/types.cr
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Expand Up @@ -41,6 +41,7 @@ lib LibC
end

alias PthreadT = ULong
alias PthreadKeyT = UInt
alias SSizeT = Long
alias SusecondsT = Long
alias TimeT = Long
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5 changes: 5 additions & 0 deletions src/lib_c/aarch64-linux-musl/c/pthread.cr
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Expand Up @@ -17,7 +17,11 @@ lib LibC
fun pthread_create(x0 : PthreadT*, x1 : PthreadAttrT*, x2 : Void* -> Void*, x3 : Void*) : Int
fun pthread_detach(x0 : PthreadT) : Int
fun pthread_getattr_np(x0 : PthreadT, x1 : PthreadAttrT*) : Int
fun pthread_getspecific(PthreadKeyT) : Void*
fun pthread_join(x0 : PthreadT, x1 : Void**) : Int
alias PthreadKeyDestructor = (Void*) ->
fun pthread_key_create(PthreadKeyT*, PthreadKeyDestructor) : Int
fun pthread_key_delete(PthreadKeyT) : Int
fun pthread_mutexattr_destroy(x0 : PthreadMutexattrT*) : Int
fun pthread_mutexattr_init(x0 : PthreadMutexattrT*) : Int
fun pthread_mutexattr_settype(x0 : PthreadMutexattrT*, x1 : Int) : Int
Expand All @@ -28,4 +32,5 @@ lib LibC
fun pthread_mutex_unlock(x0 : PthreadMutexT*) : Int
fun pthread_self : PthreadT
fun pthread_setname_np(PthreadT, Char*) : Int
fun pthread_setspecific(PthreadKeyT, Void*) : Int
end
1 change: 1 addition & 0 deletions src/lib_c/aarch64-linux-musl/c/sys/types.cr
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Expand Up @@ -54,6 +54,7 @@ lib LibC
end

type PthreadT = Void*
alias PthreadKeyT = UInt
alias SSizeT = Long
alias SusecondsT = Long
alias TimeT = Long
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5 changes: 5 additions & 0 deletions src/lib_c/arm-linux-gnueabihf/c/pthread.cr
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Expand Up @@ -25,8 +25,12 @@ lib LibC
fun pthread_create(newthread : PthreadT*, attr : PthreadAttrT*, start_routine : Void* -> Void*, arg : Void*) : Int
fun pthread_detach(th : PthreadT) : Int
fun pthread_getattr_np(thread : PthreadT, attr : PthreadAttrT*) : Int
fun pthread_getspecific(PthreadKeyT) : Void*
fun pthread_equal(thread1 : PthreadT, thread2 : PthreadT) : Int
fun pthread_join(th : PthreadT, thread_return : Void**) : Int
alias PthreadKeyDestructor = (Void*) ->
fun pthread_key_create(PthreadKeyT*, PthreadKeyDestructor) : Int
fun pthread_key_delete(PthreadKeyT) : Int
fun pthread_mutexattr_destroy(attr : PthreadMutexattrT*) : Int
fun pthread_mutexattr_init(attr : PthreadMutexattrT*) : Int
fun pthread_mutexattr_settype(attr : PthreadMutexattrT*, type : Int) : Int
Expand All @@ -37,4 +41,5 @@ lib LibC
fun pthread_mutex_unlock(mutex : PthreadMutexT*) : Int
fun pthread_self : PthreadT
fun pthread_setname_np(PthreadT, Char*) : Int
fun pthread_setspecific(PthreadKeyT, Void*) : Int
end
1 change: 1 addition & 0 deletions src/lib_c/arm-linux-gnueabihf/c/sys/types.cr
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Expand Up @@ -54,6 +54,7 @@ lib LibC
end

alias PthreadT = ULong
alias PthreadKeyT = UInt
alias SSizeT = Int
alias SusecondsT = Long
alias TimeT = Long
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5 changes: 5 additions & 0 deletions src/lib_c/i386-linux-gnu/c/pthread.cr
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Expand Up @@ -25,7 +25,11 @@ lib LibC
fun pthread_create(newthread : PthreadT*, attr : PthreadAttrT*, start_routine : Void* -> Void*, arg : Void*) : Int
fun pthread_detach(th : PthreadT) : Int
fun pthread_getattr_np(thread : PthreadT, attr : PthreadAttrT*) : Int
fun pthread_getspecific(PthreadKeyT) : Void*
fun pthread_join(th : PthreadT, thread_return : Void**) : Int
alias PthreadKeyDestructor = (Void*) ->
fun pthread_key_create(PthreadKeyT*, PthreadKeyDestructor) : Int
fun pthread_key_delete(PthreadKeyT) : Int
fun pthread_mutexattr_destroy(attr : PthreadMutexattrT*) : Int
fun pthread_mutexattr_init(attr : PthreadMutexattrT*) : Int
fun pthread_mutexattr_settype(attr : PthreadMutexattrT*, type : Int) : Int
Expand All @@ -36,4 +40,5 @@ lib LibC
fun pthread_mutex_unlock(mutex : PthreadMutexT*) : Int
fun pthread_self : PthreadT
fun pthread_setname_np(PthreadT, Char*) : Int
fun pthread_setspecific(PthreadKeyT, Void*) : Int
end
1 change: 1 addition & 0 deletions src/lib_c/i386-linux-gnu/c/sys/types.cr
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Expand Up @@ -41,6 +41,7 @@ lib LibC
end

alias PthreadT = ULong
alias PthreadKeyT = UInt
alias SSizeT = Int
alias SusecondsT = Long
alias TimeT = Long
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5 changes: 5 additions & 0 deletions src/lib_c/i386-linux-musl/c/pthread.cr
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Expand Up @@ -17,7 +17,11 @@ lib LibC
fun pthread_create(x0 : PthreadT*, x1 : PthreadAttrT*, x2 : Void* -> Void*, x3 : Void*) : Int
fun pthread_detach(x0 : PthreadT) : Int
fun pthread_getattr_np(x0 : PthreadT, x1 : PthreadAttrT*) : Int
fun pthread_getspecific(PthreadKeyT) : Void*
fun pthread_join(x0 : PthreadT, x1 : Void**) : Int
alias PthreadKeyDestructor = (Void*) ->
fun pthread_key_create(PthreadKeyT*, PthreadKeyDestructor) : Int
fun pthread_key_delete(PthreadKeyT) : Int
fun pthread_mutexattr_destroy(x0 : PthreadMutexattrT*) : Int
fun pthread_mutexattr_init(x0 : PthreadMutexattrT*) : Int
fun pthread_mutexattr_settype(x0 : PthreadMutexattrT*, x1 : Int) : Int
Expand All @@ -28,4 +32,5 @@ lib LibC
fun pthread_mutex_unlock(x0 : PthreadMutexT*) : Int
fun pthread_self : PthreadT
fun pthread_setname_np(PthreadT, Char*) : Int
fun pthread_setspecific(PthreadKeyT, Void*) : Int
end
1 change: 1 addition & 0 deletions src/lib_c/i386-linux-musl/c/sys/types.cr
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Expand Up @@ -54,6 +54,7 @@ lib LibC
end

type PthreadT = Void*
alias PthreadKeyT = UInt
alias SSizeT = Int
alias SusecondsT = Long
alias TimeT = Long
Expand Down
5 changes: 5 additions & 0 deletions src/lib_c/x86_64-darwin/c/pthread.cr
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Expand Up @@ -15,7 +15,11 @@ lib LibC
fun pthread_detach(x0 : PthreadT) : Int
fun pthread_get_stackaddr_np(x0 : PthreadT) : Void*
fun pthread_get_stacksize_np(x0 : PthreadT) : SizeT
fun pthread_getspecific(PthreadKeyT) : Void*
fun pthread_join(x0 : PthreadT, x1 : Void**) : Int
alias PthreadKeyDestructor = (Void*) ->
fun pthread_key_create(PthreadKeyT*, PthreadKeyDestructor) : Int
fun pthread_key_delete(PthreadKeyT) : Int
fun pthread_mutexattr_destroy(x0 : PthreadMutexattrT*) : Int
fun pthread_mutexattr_init(x0 : PthreadMutexattrT*) : Int
fun pthread_mutexattr_settype(x0 : PthreadMutexattrT*, x1 : Int) : Int
Expand All @@ -26,4 +30,5 @@ lib LibC
fun pthread_mutex_unlock(x0 : PthreadMutexT*) : Int
fun pthread_self : PthreadT
fun pthread_setname_np(Char*) : Int
fun pthread_setspecific(PthreadKeyT, Void*) : Int
end
1 change: 1 addition & 0 deletions src/lib_c/x86_64-darwin/c/sys/types.cr
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Expand Up @@ -40,6 +40,7 @@ lib LibC
end

type PthreadT = Void*
alias PthreadKeyT = UInt
alias SSizeT = Long
alias SusecondsT = Int
alias TimeT = Long
Expand Down
5 changes: 5 additions & 0 deletions src/lib_c/x86_64-dragonfly/c/pthread.cr
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Expand Up @@ -19,7 +19,11 @@ lib LibC
fun pthread_cond_wait(x0 : PthreadCondT*, x1 : PthreadMutexT*) : Int
fun pthread_create(x0 : PthreadT*, x1 : PthreadAttrT*, x2 : Void* -> Void*, x3 : Void*) : Int
fun pthread_detach(x0 : PthreadT) : Int
fun pthread_getspecific(PthreadKeyT) : Void*
fun pthread_join(x0 : PthreadT, x1 : Void**) : Int
alias PthreadKeyDestructor = (Void*) ->
fun pthread_key_create(PthreadKeyT*, PthreadKeyDestructor) : Int
fun pthread_key_delete(PthreadKeyT) : Int
fun pthread_mutexattr_destroy(x0 : PthreadMutexattrT*) : Int
fun pthread_mutexattr_init(x0 : PthreadMutexattrT*) : Int
fun pthread_mutexattr_settype(x0 : PthreadMutexattrT*, x1 : Int) : Int
Expand All @@ -30,4 +34,5 @@ lib LibC
fun pthread_mutex_unlock(x0 : PthreadMutexT*) : Int
fun pthread_self : PthreadT
fun pthread_setname_np(PthreadT, Char*) : Int
fun pthread_setspecific(PthreadKeyT, Void*) : Int
end
1 change: 1 addition & 0 deletions src/lib_c/x86_64-dragonfly/c/sys/types.cr
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Expand Up @@ -17,6 +17,7 @@ lib LibC
type PthreadAttrT = Void*
type PthreadCondT = Void*
type PthreadCondattrT = Void*
alias PthreadKeyT = Int
type PthreadMutexT = Void*
type PthreadMutexattrT = Void*
type PthreadT = Void*
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5 changes: 5 additions & 0 deletions src/lib_c/x86_64-freebsd/c/pthread.cr
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Expand Up @@ -19,7 +19,11 @@ lib LibC
fun pthread_cond_wait(x0 : PthreadCondT*, x1 : PthreadMutexT*) : Int
fun pthread_create(x0 : PthreadT*, x1 : PthreadAttrT*, x2 : Void* -> Void*, x3 : Void*) : Int
fun pthread_detach(x0 : PthreadT) : Int
fun pthread_getspecific(PthreadKeyT) : Void*
fun pthread_join(x0 : PthreadT, x1 : Void**) : Int
alias PthreadKeyDestructor = (Void*) ->
fun pthread_key_create(PthreadKeyT*, PthreadKeyDestructor) : Int
fun pthread_key_delete(PthreadKeyT) : Int
fun pthread_mutexattr_destroy(x0 : PthreadMutexattrT*) : Int
fun pthread_mutexattr_init(x0 : PthreadMutexattrT*) : Int
fun pthread_mutexattr_settype(x0 : PthreadMutexattrT*, x1 : Int) : Int
Expand All @@ -30,4 +34,5 @@ lib LibC
fun pthread_mutex_unlock(x0 : PthreadMutexT*) : Int
fun pthread_self : PthreadT
fun pthread_set_name_np(PthreadT, Char*)
fun pthread_setspecific(PthreadKeyT, Void*) : Int
end
1 change: 1 addition & 0 deletions src/lib_c/x86_64-freebsd/c/sys/types.cr
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Expand Up @@ -17,6 +17,7 @@ lib LibC
type PthreadAttrT = Void*
type PthreadCondT = Void*
type PthreadCondattrT = Void*
alias PthreadKeyT = Int
type PthreadMutexT = Void*
type PthreadMutexattrT = Void*
type PthreadT = Void*
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5 changes: 5 additions & 0 deletions src/lib_c/x86_64-linux-gnu/c/pthread.cr
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Expand Up @@ -25,7 +25,11 @@ lib LibC
fun pthread_create(newthread : PthreadT*, attr : PthreadAttrT*, start_routine : Void* -> Void*, arg : Void*) : Int
fun pthread_detach(th : PthreadT) : Int
fun pthread_getattr_np(thread : PthreadT, attr : PthreadAttrT*) : Int
fun pthread_getspecific(PthreadKeyT) : Void*
fun pthread_join(th : PthreadT, thread_return : Void**) : Int
alias PthreadKeyDestructor = (Void*) ->
fun pthread_key_create(PthreadKeyT*, PthreadKeyDestructor) : Int
fun pthread_key_delete(PthreadKeyT) : Int
fun pthread_mutexattr_destroy(attr : PthreadMutexattrT*) : Int
fun pthread_mutexattr_init(attr : PthreadMutexattrT*) : Int
fun pthread_mutexattr_settype(attr : PthreadMutexattrT*, type : Int) : Int
Expand All @@ -36,4 +40,5 @@ lib LibC
fun pthread_mutex_unlock(mutex : PthreadMutexT*) : Int
fun pthread_self : PthreadT
fun pthread_setname_np(PthreadT, Char*) : Int
fun pthread_setspecific(PthreadKeyT, Void*) : Int
end
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