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Kernel+LibPthread: Remove m_ prefix for public members

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Gunnar Beutner 2021-07-01 11:20:27 +02:00 • committed by Andreas Kling
parent 648b4c7d74
commit 93c741018e
3 changed files with 63 additions and 63 deletions
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4
Kernel/API/Syscall.h
View file

@ -345,8 +345,8 @@ struct SC_getkeymap_params {
}; };
struct SC_create_thread_params { struct SC_create_thread_params {
unsigned int m_detach_state = 0; // JOINABLE or DETACHED unsigned int detach_state = 0; // JOINABLE or DETACHED
int m_schedule_priority = 30; // THREAD_PRIORITY_NORMAL int schedule_priority = 30; // THREAD_PRIORITY_NORMAL
// FIXME: Implement guard pages in create_thread (unreadable pages at "overflow" end of stack) // FIXME: Implement guard pages in create_thread (unreadable pages at "overflow" end of stack)
// "If an implementation rounds up the value of guardsize to a multiple of {PAGESIZE}, // "If an implementation rounds up the value of guardsize to a multiple of {PAGESIZE},
// a call to pthread_attr_getguardsize() specifying attr shall store in the guardsize // a call to pthread_attr_getguardsize() specifying attr shall store in the guardsize

8
Kernel/Syscalls/thread.cpp
View file

@ -24,11 +24,11 @@ KResultOr<FlatPtr> Process::sys$create_thread(void* (*entry)(void*), Userspace<c
if (!copy_from_user(&params, user_params)) if (!copy_from_user(&params, user_params))
return EFAULT; return EFAULT;
unsigned detach_state = params.m_detach_state; unsigned detach_state = params.detach_state;
int schedule_priority = params.m_schedule_priority; int schedule_priority = params.schedule_priority;
unsigned stack_size = params.m_stack_size; unsigned stack_size = params.stack_size;
auto user_sp = Checked<FlatPtr>((FlatPtr)params.m_stack_location); auto user_sp = Checked<FlatPtr>((FlatPtr)params.stack_location);
user_sp += stack_size; user_sp += stack_size;
if (user_sp.has_overflow()) if (user_sp.has_overflow())
return EOVERFLOW; return EOVERFLOW;

114
Userland/Libraries/LibPthread/pthread.cpp
View file

@ -57,12 +57,12 @@ static void* pthread_create_helper(void* (*routine)(void*), void* argument, void
static int create_thread(pthread_t* thread, void* (*entry)(void*), void* argument, PthreadAttrImpl* thread_params) static int create_thread(pthread_t* thread, void* (*entry)(void*), void* argument, PthreadAttrImpl* thread_params)
{ {
void** stack = (void**)((uintptr_t)thread_params->m_stack_location + thread_params->m_stack_size); void** stack = (void**)((uintptr_t)thread_params->stack_location + thread_params->stack_size);
auto push_on_stack = [&](void* data) { auto push_on_stack = [&](void* data) {
stack--; stack--;
*stack = data; *stack = data;
thread_params->m_stack_size -= sizeof(void*); thread_params->stack_size -= sizeof(void*);
}; };
// We set up the stack for pthread_create_helper. // We set up the stack for pthread_create_helper.
@ -71,8 +71,8 @@ static int create_thread(pthread_t* thread, void* (*entry)(void*), void* argumen
while (((uintptr_t)stack - 16) % 16 != 0) while (((uintptr_t)stack - 16) % 16 != 0)
push_on_stack(nullptr); push_on_stack(nullptr);
push_on_stack((void*)(uintptr_t)thread_params->m_stack_size); push_on_stack((void*)(uintptr_t)thread_params->stack_size);
push_on_stack(thread_params->m_stack_location); push_on_stack(thread_params->stack_location);
push_on_stack(argument); push_on_stack(argument);
push_on_stack((void*)entry); push_on_stack((void*)entry);
VERIFY((uintptr_t)stack % 16 == 0); VERIFY((uintptr_t)stack % 16 == 0);
@ -108,23 +108,23 @@ int pthread_create(pthread_t* thread, pthread_attr_t* attributes, void* (*start_
PthreadAttrImpl* used_attributes = arg_attributes ? *arg_attributes : &default_attributes; PthreadAttrImpl* used_attributes = arg_attributes ? *arg_attributes : &default_attributes;
if (!used_attributes->m_stack_location) { if (!used_attributes->stack_location) {
// adjust stack size, user might have called setstacksize, which has no restrictions on size/alignment // adjust stack size, user might have called setstacksize, which has no restrictions on size/alignment
if (0 != (used_attributes->m_stack_size % required_stack_alignment)) if (0 != (used_attributes->stack_size % required_stack_alignment))
used_attributes->m_stack_size += required_stack_alignment - (used_attributes->m_stack_size % required_stack_alignment); used_attributes->stack_size += required_stack_alignment - (used_attributes->stack_size % required_stack_alignment);
used_attributes->m_stack_location = mmap_with_name(nullptr, used_attributes->m_stack_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_STACK, 0, 0, "Thread stack"); used_attributes->stack_location = mmap_with_name(nullptr, used_attributes->stack_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_STACK, 0, 0, "Thread stack");
if (!used_attributes->m_stack_location) if (!used_attributes->stack_location)
return -1; return -1;
} }
dbgln_if(PTHREAD_DEBUG, "pthread_create: Creating thread with attributes at {}, detach state {}, priority {}, guard page size {}, stack size {}, stack location {}", dbgln_if(PTHREAD_DEBUG, "pthread_create: Creating thread with attributes at {}, detach state {}, priority {}, guard page size {}, stack size {}, stack location {}",
used_attributes, used_attributes,
(PTHREAD_CREATE_JOINABLE == used_attributes->m_detach_state) ? "joinable" : "detached", (PTHREAD_CREATE_JOINABLE == used_attributes->detach_state) ? "joinable" : "detached",
used_attributes->m_schedule_priority, used_attributes->schedule_priority,
used_attributes->m_guard_page_size, used_attributes->guard_page_size,
used_attributes->m_stack_size, used_attributes->stack_size,
used_attributes->m_stack_location); used_attributes->stack_location);
return create_thread(thread, start_routine, argument_to_start_routine, used_attributes); return create_thread(thread, start_routine, argument_to_start_routine, used_attributes);
} }
@ -222,11 +222,11 @@ int pthread_attr_init(pthread_attr_t* attributes)
dbgln_if(PTHREAD_DEBUG, "pthread_attr_init: New thread attributes at {}, detach state {}, priority {}, guard page size {}, stack size {}, stack location {}", dbgln_if(PTHREAD_DEBUG, "pthread_attr_init: New thread attributes at {}, detach state {}, priority {}, guard page size {}, stack size {}, stack location {}",
impl, impl,
(PTHREAD_CREATE_JOINABLE == impl->m_detach_state) ? "joinable" : "detached", (PTHREAD_CREATE_JOINABLE == impl->detach_state) ? "joinable" : "detached",
impl->m_schedule_priority, impl->schedule_priority,
impl->m_guard_page_size, impl->guard_page_size,
impl->m_stack_size, impl->stack_size,
impl->m_stack_location); impl->stack_location);
return 0; return 0;
} }
@ -245,7 +245,7 @@ int pthread_attr_getdetachstate(const pthread_attr_t* attributes, int* p_detach_
if (!attributes_impl || !p_detach_state) if (!attributes_impl || !p_detach_state)
return EINVAL; return EINVAL;
*p_detach_state = attributes_impl->m_detach_state; *p_detach_state = attributes_impl->detach_state;
return 0; return 0;
} }
@ -259,15 +259,15 @@ int pthread_attr_setdetachstate(pthread_attr_t* attributes, int detach_state)
if (detach_state != PTHREAD_CREATE_JOINABLE && detach_state != PTHREAD_CREATE_DETACHED) if (detach_state != PTHREAD_CREATE_JOINABLE && detach_state != PTHREAD_CREATE_DETACHED)
return EINVAL; return EINVAL;
attributes_impl->m_detach_state = detach_state; attributes_impl->detach_state = detach_state;
dbgln_if(PTHREAD_DEBUG, "pthread_attr_setdetachstate: Thread attributes at {}, detach state {}, priority {}, guard page size {}, stack size {}, stack location {}", dbgln_if(PTHREAD_DEBUG, "pthread_attr_setdetachstate: Thread attributes at {}, detach state {}, priority {}, guard page size {}, stack size {}, stack location {}",
attributes_impl, attributes_impl,
(PTHREAD_CREATE_JOINABLE == attributes_impl->m_detach_state) ? "joinable" : "detached", (PTHREAD_CREATE_JOINABLE == attributes_impl->detach_state) ? "joinable" : "detached",
attributes_impl->m_schedule_priority, attributes_impl->schedule_priority,
attributes_impl->m_guard_page_size, attributes_impl->guard_page_size,
attributes_impl->m_stack_size, attributes_impl->stack_size,
attributes_impl->m_stack_location); attributes_impl->stack_location);
return 0; return 0;
} }
@ -279,7 +279,7 @@ int pthread_attr_getguardsize(const pthread_attr_t* attributes, size_t* p_guard_
if (!attributes_impl || !p_guard_size) if (!attributes_impl || !p_guard_size)
return EINVAL; return EINVAL;
*p_guard_size = attributes_impl->m_reported_guard_page_size; *p_guard_size = attributes_impl->reported_guard_page_size;
return 0; return 0;
} }
@ -300,16 +300,16 @@ int pthread_attr_setguardsize(pthread_attr_t* attributes, size_t guard_size)
return EINVAL; return EINVAL;
} }
attributes_impl->m_guard_page_size = actual_guard_size; attributes_impl->guard_page_size = actual_guard_size;
attributes_impl->m_reported_guard_page_size = guard_size; // POSIX, why? attributes_impl->reported_guard_page_size = guard_size; // POSIX, why?
dbgln_if(PTHREAD_DEBUG, "pthread_attr_setguardsize: Thread attributes at {}, detach state {}, priority {}, guard page size {}, stack size {}, stack location {}", dbgln_if(PTHREAD_DEBUG, "pthread_attr_setguardsize: Thread attributes at {}, detach state {}, priority {}, guard page size {}, stack size {}, stack location {}",
attributes_impl, attributes_impl,
(PTHREAD_CREATE_JOINABLE == attributes_impl->m_detach_state) ? "joinable" : "detached", (PTHREAD_CREATE_JOINABLE == attributes_impl->detach_state) ? "joinable" : "detached",
attributes_impl->m_schedule_priority, attributes_impl->schedule_priority,
attributes_impl->m_guard_page_size, attributes_impl->guard_page_size,
attributes_impl->m_stack_size, attributes_impl->stack_size,
attributes_impl->m_stack_location); attributes_impl->stack_location);
return 0; return 0;
} }
@ -321,7 +321,7 @@ int pthread_attr_getschedparam(const pthread_attr_t* attributes, struct sched_pa
if (!attributes_impl || !p_sched_param) if (!attributes_impl || !p_sched_param)
return EINVAL; return EINVAL;
p_sched_param->sched_priority = attributes_impl->m_schedule_priority; p_sched_param->sched_priority = attributes_impl->schedule_priority;
return 0; return 0;
} }
@ -334,15 +334,15 @@ int pthread_attr_setschedparam(pthread_attr_t* attributes, const struct sched_pa
if (p_sched_param->sched_priority < THREAD_PRIORITY_MIN || p_sched_param->sched_priority > THREAD_PRIORITY_MAX) if (p_sched_param->sched_priority < THREAD_PRIORITY_MIN || p_sched_param->sched_priority > THREAD_PRIORITY_MAX)
return ENOTSUP; return ENOTSUP;
attributes_impl->m_schedule_priority = p_sched_param->sched_priority; attributes_impl->schedule_priority = p_sched_param->sched_priority;
dbgln_if(PTHREAD_DEBUG, "pthread_attr_setschedparam: Thread attributes at {}, detach state {}, priority {}, guard page size {}, stack size {}, stack location {}", dbgln_if(PTHREAD_DEBUG, "pthread_attr_setschedparam: Thread attributes at {}, detach state {}, priority {}, guard page size {}, stack size {}, stack location {}",
attributes_impl, attributes_impl,
(PTHREAD_CREATE_JOINABLE == attributes_impl->m_detach_state) ? "joinable" : "detached", (PTHREAD_CREATE_JOINABLE == attributes_impl->detach_state) ? "joinable" : "detached",
attributes_impl->m_schedule_priority, attributes_impl->schedule_priority,
attributes_impl->m_guard_page_size, attributes_impl->guard_page_size,
attributes_impl->m_stack_size, attributes_impl->stack_size,
attributes_impl->m_stack_location); attributes_impl->stack_location);
return 0; return 0;
} }
@ -354,8 +354,8 @@ int pthread_attr_getstack(const pthread_attr_t* attributes, void** p_stack_ptr,
if (!attributes_impl || !p_stack_ptr || !p_stack_size) if (!attributes_impl || !p_stack_ptr || !p_stack_size)
return EINVAL; return EINVAL;
*p_stack_ptr = attributes_impl->m_stack_location; *p_stack_ptr = attributes_impl->stack_location;
*p_stack_size = attributes_impl->m_stack_size; *p_stack_size = attributes_impl->stack_size;
return 0; return 0;
} }
@ -376,16 +376,16 @@ int pthread_attr_setstack(pthread_attr_t* attributes, void* p_stack, size_t stac
// FIXME: "[EACCES] The stack page(s) described by stackaddr and stacksize are not both readable and writable by the thread." // FIXME: "[EACCES] The stack page(s) described by stackaddr and stacksize are not both readable and writable by the thread."
// Have to check that the whole range is mapped to this process/thread? Can we defer this to create_thread? // Have to check that the whole range is mapped to this process/thread? Can we defer this to create_thread?
attributes_impl->m_stack_size = stack_size; attributes_impl->stack_size = stack_size;
attributes_impl->m_stack_location = p_stack; attributes_impl->stack_location = p_stack;
dbgln_if(PTHREAD_DEBUG, "pthread_attr_setstack: Thread attributes at {}, detach state {}, priority {}, guard page size {}, stack size {}, stack location {}", dbgln_if(PTHREAD_DEBUG, "pthread_attr_setstack: Thread attributes at {}, detach state {}, priority {}, guard page size {}, stack size {}, stack location {}",
attributes_impl, attributes_impl,
(PTHREAD_CREATE_JOINABLE == attributes_impl->m_detach_state) ? "joinable" : "detached", (PTHREAD_CREATE_JOINABLE == attributes_impl->detach_state) ? "joinable" : "detached",
attributes_impl->m_schedule_priority, attributes_impl->schedule_priority,
attributes_impl->m_guard_page_size, attributes_impl->guard_page_size,
attributes_impl->m_stack_size, attributes_impl->stack_size,
attributes_impl->m_stack_location); attributes_impl->stack_location);
return 0; return 0;
} }
@ -397,7 +397,7 @@ int pthread_attr_getstacksize(const pthread_attr_t* attributes, size_t* p_stack_
if (!attributes_impl || !p_stack_size) if (!attributes_impl || !p_stack_size)
return EINVAL; return EINVAL;
*p_stack_size = attributes_impl->m_stack_size; *p_stack_size = attributes_impl->stack_size;
return 0; return 0;
} }
@ -411,15 +411,15 @@ int pthread_attr_setstacksize(pthread_attr_t* attributes, size_t stack_size)
if ((stack_size < PTHREAD_STACK_MIN) || stack_size > highest_reasonable_stack_size) if ((stack_size < PTHREAD_STACK_MIN) || stack_size > highest_reasonable_stack_size)
return EINVAL; return EINVAL;
attributes_impl->m_stack_size = stack_size; attributes_impl->stack_size = stack_size;
dbgln_if(PTHREAD_DEBUG, "pthread_attr_setstacksize: Thread attributes at {}, detach state {}, priority {}, guard page size {}, stack size {}, stack location {}", dbgln_if(PTHREAD_DEBUG, "pthread_attr_setstacksize: Thread attributes at {}, detach state {}, priority {}, guard page size {}, stack size {}, stack location {}",
attributes_impl, attributes_impl,
(PTHREAD_CREATE_JOINABLE == attributes_impl->m_detach_state) ? "joinable" : "detached", (PTHREAD_CREATE_JOINABLE == attributes_impl->detach_state) ? "joinable" : "detached",
attributes_impl->m_schedule_priority, attributes_impl->schedule_priority,
attributes_impl->m_guard_page_size, attributes_impl->guard_page_size,
attributes_impl->m_stack_size, attributes_impl->stack_size,
attributes_impl->m_stack_location); attributes_impl->stack_location);
return 0; return 0;
} }