summaryrefslogtreecommitdiff
path: root/kernel/source/application.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/source/application.cpp')
-rw-r--r--kernel/source/application.cpp680
1 files changed, 206 insertions, 474 deletions
diff --git a/kernel/source/application.cpp b/kernel/source/application.cpp
index c3ce2f1..0c3fd36 100644
--- a/kernel/source/application.cpp
+++ b/kernel/source/application.cpp
@@ -1,550 +1,282 @@
#include <hilbert/kernel/application.hpp>
-#include <hilbert/kernel/paging.hpp>
-#include <hilbert/kernel/panic.hpp>
-
-//TODO - scheduling.
+#include <hilbert/kernel/utility.hpp>
+#include <hilbert/kernel/input.hpp>
namespace hilbert::kernel::application {
- process::process() : framebuffer_vaddr(0) {
-
- uint64_t p4_vaddr;
- paging::map_new_kernel_page(p4_vaddr, p4_paddr);
- p4 = (uint64_t *)p4_vaddr;
-
- uint64_t p3_paddr;
- uint64_t p3_vaddr;
- paging::map_new_kernel_page(p3_vaddr, p3_paddr);
- p3 = (uint64_t *)p3_vaddr;
-
- for (int i = 1; i < 511; ++i)
- p4[i] = 0;
- p4[0] = paging::encode_pte(p3_paddr, true, true, true);
- p4[511] = paging::kernel_p4e;
-
- for (int i = 0; i < 512; ++i) {
- p3[i] = 0;
- p2s[i] = 0;
- p1s[i] = 0;
- p1es_to_free_on_exit[i] = 0;
- }
+ //returns pointer to copy
+ extern "C" void *copy_syscall_stack(const uint8_t *bottom) {
+ uint64_t len = 0xfffffffffffff000 - (uint64_t)bottom;
+ uint8_t *buffer = new uint8_t[len];
+ for (uint64_t i = 0; i < len; ++i)
+ buffer[i] = bottom[i];
+ return buffer;
+ }
+ extern "C" void restore_syscall_stack(uint8_t *from, uint8_t *to) {
+ uint64_t len = 0xfffffffffffff000 - (uint64_t)to;
+ for (uint64_t i = 0; i < len; ++i)
+ to[i] = from[i];
+ delete[] from;
}
- void process::map_page(uint64_t vaddr, uint64_t paddr,
- bool write, bool execute, bool free_pram_on_exit
- ) {
-
- uint64_t i = ((vaddr / 4096) / 512) / 512;
- uint64_t j = ((vaddr / 4096) / 512) % 512;
- uint64_t k = (vaddr / 4096) % 512;
-
- if (p2s[i] == 0) {
- uint64_t p2_paddr;
- uint64_t p2_vaddr;
- paging::map_new_kernel_page(p2_vaddr, p2_paddr);
- p3[i] = paging::encode_pte(p2_paddr, true, true, true);
- p2s[i] = (uint64_t *)p2_vaddr;
- p1s[i] = new uint64_t *[512];
- p1es_to_free_on_exit[i] = new bool *[512];
- for (int u = 0; u < 512; ++u) {
- p2s[i][u] = 0;
- p1s[i][u] = 0;
- p1es_to_free_on_exit[i][u] = 0;
- }
- }
+ utility::id_allocator<process *> *all_processes;
+ utility::queue<thread *> *paused_threads;
+ thread *running_thread;
- if (p2s[i][j] == 0) {
- uint64_t p1_paddr;
- uint64_t p1_vaddr;
- paging::map_new_kernel_page(p1_vaddr, p1_paddr);
- p2s[i][j] = paging::encode_pte(p1_paddr, true, true, true);
- p1s[i][j] = (uint64_t *)p1_vaddr;
- p1es_to_free_on_exit[i][j] = new bool[512];
- for (int u = 0; u < 512; ++u) {
- p1s[i][j][u] = 0;
- p1es_to_free_on_exit[i][j][u] = false;
- }
- }
+ struct socket_listener_registration {
+ socket_listener *listener;
+ utility::string id;
+ };
- p1s[i][j][k] = paging::encode_pte(paddr, true, write, execute);
- p1es_to_free_on_exit[i][j][k] = free_pram_on_exit;
+ utility::list<socket_listener_registration> *all_running_socket_listeners;
- }
+ extern "C" void init_applications_asm();
- bool process::is_page_owned(uint64_t vaddr) {
- uint64_t i = ((vaddr / 4096) / 512) / 512;
- uint64_t j = ((vaddr / 4096) / 512) % 512;
- uint64_t k = (vaddr / 4096) % 512;
- return
- i < 512 && p1s[i] != 0 && p1s[i][j] != 0 &&
- p1s[i][j][k] != 0 && p1es_to_free_on_exit[i][j][k];
+ void init_applications() {
+ all_processes = new utility::id_allocator<process *>();
+ paused_threads = new utility::queue<thread *>();
+ running_thread = 0;
+ all_running_socket_listeners =
+ new utility::list<socket_listener_registration>();
+ init_applications_asm();
}
- uint64_t process::get_free_vaddr_pages(uint64_t count) {
- uint64_t start = 0x200000 / 4096;
- uint64_t length = 0;
- while (start + length <= 0x8000000000 / 4096) {
- if (length == count)
- return start * 4096;
- int i = ((start + length) / 512) / 512;
- int j = ((start + length) / 512) % 512;
- int k = (start + length) % 512;
- if (p1s[i] == 0 || p1s[i][j] == 0 || p1s[i][j][k] == 0)
- ++length;
- else {
- start += length + 1;
- length = 0;
- }
- }
- //TODO: handle out of memory
- return 0;
+ uint64_t add_process(process *p) {
+ return p->id = all_processes->add_new(utility::move(p));
}
- uint64_t process::count_mapped_vram_pages() {
- uint64_t count = 0;
- for (int i = 0; i < 512; ++i)
- if (p1s[i] != 0)
- for (int j = 0; j < 512; ++j)
- if (p1s[i][j] != 0)
- for (int k = 0; k < 512; ++k)
- if (p1s[i][j][k] != 0)
- ++count;
- return count;
+ socket_listener *try_register_socket_listener(const utility::string &id) {
+ for (auto *n = all_running_socket_listeners->first; n; n = n->next)
+ if (n->value.id == id)
+ return 0;
+ socket_listener *sl = new socket_listener();
+ all_running_socket_listeners->insert_end({.listener = sl, .id = id});
+ return sl;
}
- utility::id_allocator<process *> *processes;
- utility::queue<thread *> *paused_threads;
- utility::queue<thread *> *threads_waiting_for_input;
- thread *running_thread;
- utility::list<socket_listener *> *all_socket_listeners;
-
- static uint8_t correct_magic[16] = {
- 0x7f, 0x45, 0x4c, 0x46, 0x02, 0x01, 0x01, 0x00,
- 0x02, 0x00, 0x3e, 0x00, 0x01, 0x00, 0x00, 0x00
- };
-
-#define READ(a, b, c) \
- { \
- storage::fs_result _result = file.read_file(a, b, c); \
- if (_result != storage::fs_result::success) \
- return stream_result::io_error; \
+ socket_listener *try_get_socket_listener(const utility::string &id) {
+ for (auto *n = all_running_socket_listeners->first; n; n = n->next)
+ if (n->value.id == id)
+ return n->value.listener;
+ return 0;
}
-#define TRY_MAR(expr) \
- { \
- storage::fs_result _result = expr; \
- if (_result != storage::fs_result::success) { \
- delete process_out; \
- return stream_result::io_error; \
- } \
+ void remove_socket_listener(socket_listener *sl) {
+ for (auto *n = all_running_socket_listeners->first; n; n = n->next)
+ if (n->value.listener == sl) {
+ all_running_socket_listeners->remove(n);
+ delete sl;
+ return;
+ }
}
- struct load_info {
- uint64_t foffset;
- uint64_t fsize;
- uint64_t vaddr;
- uint64_t voffset;
- uint64_t vpages;
- bool writable;
- bool executable;
- };
-
- storage::fs_result map_and_read(
- const vfile::vfile &file, process *process, uint64_t vaddr, uint64_t faddr,
- uint64_t len, bool writable, bool executable
- ) {
-
- uint64_t page_vaddr = vaddr & ~4095;
- int at_start = vaddr & 4095;
- int at_end = 4096 - len - at_start;
-
- uint64_t page_paddr = paging::take_pram_page();
- process->map_page(page_vaddr, page_paddr, writable, executable, true);
- uint64_t page_kvaddr = paging::find_unmapped_vram_region(1);
- paging::map_kernel_page(page_paddr, page_kvaddr, true, false);
-
- storage::fs_result result = storage::fs_result::success;
-
- if (at_start) {
- uint8_t *blank = (uint8_t *)page_kvaddr;
- for (int i = 0; i < at_start; ++i)
- blank[i] = 0;
- }
-
- if (len != 0)
- result = file.read_file(faddr, len, (void *)(page_kvaddr + at_start));
-
- if (at_end) {
- uint8_t *blank = (uint8_t *)(page_kvaddr + at_start + len);
- for (int i = 0; i < at_end; ++i)
- blank[i] = 0;
- }
-
- paging::unmap_kernel_page(page_kvaddr);
- return result;
+ //cpu argument not on stack.
+ extern "C" [[noreturn]] void resume_thread(const cpu_state &cpu);
+ extern "C" [[noreturn]] void resume_next_thread() {
+ running_thread = 0;
+ while (paused_threads->count == 0)
+ asm volatile ("sti\nhlt\ncli");
+ thread *t = paused_threads->take();
+ running_thread = t;
+ resume_thread(t->saved_state);
}
- stream_result create_application(
- const vfile::vfile &file, process *&process_out, thread *&thread_out
- ) {
-
- uint8_t magic[16];
- if (file.dir_entry.type != storage::file_type::regular_file)
- return stream_result::not_a_regular_file;
- if (file.dir_entry.length < 64)
- return stream_result::not_an_executable;
- READ(0, 8, magic)
- READ(16, 8, magic + 8)
- for (int i = 0; i < 16; ++i)
- if (magic[i] != correct_magic[i])
- return stream_result::not_an_executable;
-
- uint64_t entry_point;
- uint64_t phead_start;
- uint16_t phead_entry_size;
- uint16_t phead_entry_count;
-
- READ(24, 8, &entry_point)
- READ(32, 8, &phead_start)
- READ(54, 2, &phead_entry_size)
- READ(56, 2, &phead_entry_count)
-
- if (file.dir_entry.length <
- phead_start + phead_entry_size * phead_entry_count)
- return stream_result::not_an_executable;
-
- utility::vector<load_info> load_infos;
-
- for (uint16_t i = 0; i < phead_entry_count; ++i) {
-
- uint64_t entry_start = phead_start + phead_entry_size * i;
-
- uint32_t seg_type;
- READ(entry_start, 4, &seg_type)
- if (seg_type != 1)
- continue;
-
- uint64_t foffset;
- uint64_t vaddr;
- uint64_t voffset;
- uint64_t fsize;
- uint64_t vsize;
- uint32_t flags;
-
- READ(entry_start + 8, 8, &foffset)
- READ(entry_start + 16, 8, &vaddr)
- READ(entry_start + 32, 8, &fsize)
- READ(entry_start + 40, 8, &vsize)
- READ(entry_start + 4, 4, &flags)
-
- voffset = vaddr % 4096;
- vaddr -= voffset;
-
- if (vsize == 0)
- continue;
-
- if (file.dir_entry.length < foffset + fsize)
- return stream_result::not_an_executable;
- if (fsize > vsize)
- return stream_result::not_an_executable;
-
- if (vaddr < 0x200000)
- return stream_result::not_an_executable;
-
- uint64_t vpages = (voffset + vsize - 1) / 4096 + 1;
-
- if (vaddr + vpages * 4096 > 0x8000000000)
- return stream_result::not_an_executable;
-
- load_info info = {
- .foffset = foffset,
- .fsize = fsize,
- .vaddr = vaddr,
- .voffset = voffset,
- .vpages = vpages,
- .writable = (flags & 2) == 2,
- .executable = (flags & 1) == 1
- };
- load_infos.add_end(info);
+ process::process(app_memory *memory) : memory(memory) {}
- }
+ process::~process() {
+ delete memory; //:p
+ }
- process_out = new process();
-
- for (unsigned i = 0; i < load_infos.count; ++i) {
- const auto &info = load_infos.buffer[i];
-
- uint64_t vaddr = info.vaddr + info.voffset;
- uint64_t faddr = info.foffset;
- uint64_t v_remaining = info.vpages * 4096 - info.voffset;
- uint64_t f_remaining = info.fsize;
-
- if (info.voffset != 0) {
- int to_read = info.fsize < 4096 - info.voffset
- ? info.fsize : 4096 - info.voffset;
- if (to_read > 0) {
- TRY_MAR(map_and_read(file, process_out, vaddr, faddr, to_read,
- info.writable, info.executable))
- vaddr += to_read;
- faddr += to_read;
- v_remaining -= to_read;
- f_remaining -= to_read;
- }
- }
+ void process::add_environment_variable(
+ utility::string &&name, utility::string &&value) {
+ environment_variables.insert_end({.a = name, .b = value});
+ }
- while (f_remaining > 0) {
- int to_read = f_remaining < 4096 ? f_remaining : 4096;
- TRY_MAR(map_and_read(file, process_out, vaddr, faddr, to_read,
- info.writable, info.executable))
- vaddr += to_read;
- faddr += to_read;
- v_remaining -= to_read;
- f_remaining -= to_read;
- }
+ void process::add_thread(thread *t) {
+ threads.insert_end(t);
+ }
- if (vaddr & 4095) {
- v_remaining -= 4096 - (vaddr & 4095);
- vaddr += 4096 - (vaddr & 4095);
- }
+ void process::notify_thread_ended(thread *t, int exit_code) {
+ threads.remove_first_of(t);
+ if (threads.first == 0)
+ on_end_process(exit_code);
+ }
- while (v_remaining > 0) {
- map_and_read(
- file, process_out, vaddr, 0, 0, info.writable, info.executable);
- vaddr += 4096;
- v_remaining -= 4096;
- }
+ void process::on_end_process(int exit_code) {
+ while (threads.first) {
+ threads.first->value->on_end_thread();
+ delete threads.first->value;
+ threads.remove(threads.first);
}
- for (uint64_t vaddr = 0x1000; vaddr < 0x1ff000; vaddr += 4096) {
- uint64_t paddr = paging::take_pram_page();
- uint64_t kvaddr = paging::find_unmapped_vram_region(1);
- paging::map_kernel_page(paddr, kvaddr, true, false);
- uint8_t *p = (uint8_t *)kvaddr;
- for (int i = 0; i < 4096; ++i)
- p[i] = 0;
- paging::unmap_kernel_page(kvaddr);
- process_out->map_page(vaddr, paddr, true, false, true);
- }
+ //TODO: destroy file streams
+ //TODO: destroy socket streams
+ //TODO: destroy socket listeners
- thread_out = new thread();
- process_out->threads.insert_end(thread_out);
- thread_out->the_process = process_out;
-
- thread_out->state = thread_state::paused;
-
- thread_out->cpu.rax = 0;
- thread_out->cpu.rbx = 0;
- thread_out->cpu.rcx = 0;
- thread_out->cpu.rdx = 0;
- thread_out->cpu.rdi = 0;
- thread_out->cpu.rsi = 0;
- thread_out->cpu.rbp = 0;
- thread_out->cpu.rsp = 0x1ff000;
- thread_out->cpu.r8 = 0;
- thread_out->cpu.r9 = 0;
- thread_out->cpu.r10 = 0;
- thread_out->cpu.r11 = 0;
- thread_out->cpu.r12 = 0;
- thread_out->cpu.r13 = 0;
- thread_out->cpu.r14 = 0;
- thread_out->cpu.r15 = 0;
-
- thread_out->cpu.rflags = 0x200;
- thread_out->cpu.rip = entry_point;
- thread_out->cpu.cr3 = process_out->p4_paddr;
- thread_out->cpu.in_syscall = false;
-
- return stream_result::success;
+ this->exit_code = exit_code;
}
- extern "C" void init_applications_asm();
-
- void init_applications() {
- processes = new utility::id_allocator<process *>();
- paused_threads = new utility::queue<thread *>();
- threads_waiting_for_input = new utility::queue<thread *>();
- all_socket_listeners = new utility::list<socket_listener *>();
- init_applications_asm();
+ bool process::has_ended() const {
+ return threads.first == 0;
}
- //only called from non-interruptable contexts.
- //cpu argument not on stack.
- extern "C" [[noreturn]] void resume_thread(const cpu_state &cpu);
-
- extern "C" void *copy_syscall_stack(uint8_t *rsp) {
- uint64_t size = 0xfffffffffffff000 - (uint64_t)rsp;
- uint8_t *buffer = new uint8_t[size];
- for (uint64_t i = 0; i < size; ++i)
- buffer[i] = rsp[i];
- return buffer;
+ unsigned process::add_file_stream(file_stream *stream) {
+ return open_streams.add_new({
+ .is_socket = false, .as_file_stream = stream });
}
- extern "C" void restore_syscall_stack(const uint8_t *from, uint8_t *rsp) {
- uint64_t size = 0xfffffffffffff000 - (uint64_t)rsp;
- for (uint64_t i = 0; i < size; ++i)
- rsp[i] = from[i];
- delete[] from;
+ unsigned process::add_socket_stream(socket_stream_end *stream) {
+ return open_streams.add_new({
+ .is_socket = true, .as_socket_stream = stream });
}
- thread::~thread() {
- for (auto *p = the_process->threads.first; p; p = p->next)
- if (p->value == this) {
- the_process->threads.remove(p);
- break;
- }
- if (the_process->threads.first == 0) {
- the_process->exit_code = exit_code;
- the_process->cleanup();
- }
- if (state != thread_state::running)
- panic(0x9af5e6);
+ unsigned process::add_socket_listener(socket_listener *sl) {
+ return running_socket_listeners.add_new(utility::move(sl));
}
- [[noreturn]] void resume_next() {
- while (paused_threads->count == 0)
- asm volatile ("sti\nhlt\ncli");
- auto *t = paused_threads->take();
- running_thread = t;
- t->state = thread_state::running;
- resume_thread(t->cpu);
+ generic_stream_ptr process::get_stream(unsigned handle) {
+ if (open_streams.has_id(handle))
+ return open_streams.get(handle);
+ return null_gsp;
}
- void process::end_process(unsigned exit_code) {
- while (threads.first != 0)
- delete threads.first->value;
- this->exit_code = exit_code;
- cleanup();
+ generic_stream_ptr process::take_stream(unsigned handle) {
+ auto ptr = open_streams.get(handle);
+ open_streams.remove_id(handle);
+ return ptr;
}
- void process::cleanup() {
- //TODO
- panic(0x9af5e6);
+ void process::add_stream_with_handle(
+ unsigned handle, generic_stream_ptr ptr) {
+ open_streams.add_id(new generic_stream_ptr(ptr), handle);
}
- socket_stream::socket_stream(socket *sock, bool are_we_b)
- : sock(sock), are_we_b(are_we_b),
- our_threads_waiting_to_read(are_we_b
- ? sock->process_b_threads_waiting_to_read
- : sock->process_a_threads_waiting_to_read),
- their_threads_waiting_to_read(are_we_b
- ? sock->process_a_threads_waiting_to_read
- : sock->process_b_threads_waiting_to_read),
- them_to_us(are_we_b ? sock->a_to_b : sock->b_to_a),
- us_to_them(are_we_b ? sock->b_to_a : sock->a_to_b),
- them_closed(are_we_b ? sock->a_closed : sock->b_closed),
- us_closed(are_we_b ? sock->b_closed : sock->a_closed) {}
-
- stream_result socket_stream::seek(seek_origin, int64_t) {
- return stream_result::not_seekable;
+ socket_listener *process::get_socket_listener(unsigned handle) {
+ if (running_socket_listeners.has_id(handle))
+ return running_socket_listeners.get(handle);
+ return 0;
}
- stream_result socket_stream::read(uint64_t count, void *into) {
- uint8_t *buffer = (uint8_t *)into;
- for (uint64_t i = 0; i < count; ++i) {
- while (them_to_us.count == 0) {
- if (them_closed)
- return stream_result::other_end_closed;
- if (!save_thread_state(running_thread->cpu)) {
- running_thread->state = thread_state::waiting;
- our_threads_waiting_to_read.insert(running_thread);
- resume_next();
- }
- }
- buffer[i] = them_to_us.take();
+ socket_listener *process::take_socket_listener(unsigned handle) {
+ if (running_socket_listeners.has_id(handle)) {
+ socket_listener *listener = running_socket_listeners.get(handle);
+ running_socket_listeners.remove_id(handle);
+ return listener;
}
- return stream_result::success;
+ return 0;
}
- stream_result socket_stream::write(uint64_t count, const void *from) {
- if (them_closed)
- return stream_result::other_end_closed;
- const uint8_t *buffer = (const uint8_t *)from;
- for (uint64_t i = 0; i < count; ++i) {
- if (their_threads_waiting_to_read.count > 0) {
- auto *ot = their_threads_waiting_to_read.take();
- ot->state = thread_state::paused;
- paused_threads->insert(ot);
+ void process::close_stream(unsigned handle) {
+
+ if (!open_streams.has_id(handle))
+ return;
+ auto ptr = open_streams.get(handle);
+ open_streams.remove_id(handle);
+
+ if (ptr.is_socket) {
+ auto stream = ptr.as_socket_stream;
+
+ if (stream->is_other_side_open) {
+ stream->other_end->is_other_side_open = false;
+ auto &q = stream->other_end->waiting_to_read;
+ while (q.count > 0)
+ paused_threads->insert(q.take());
}
- us_to_them.insert(buffer[i]);
+
+ else
+ delete stream->the_socket;
+
+ delete stream;
}
- return stream_result::success;
+
}
- stream_result socket_stream::get_length(uint64_t &) {
- return stream_result::not_sized;
+ thread::thread(process *owner, uint64_t entry)
+ : stack_top(owner->memory->map_new_stack()), waiting_for_socket_stream(0),
+ waiting_to_accept_from(0), waiting_to_connect_to(0),
+ waiting_for_input(false), owner(owner) {
+
+ saved_state.rax = 0;
+ saved_state.rbx = 0;
+ saved_state.rcx = 0;
+ saved_state.rdx = 0;
+ saved_state.rdi = 0;
+ saved_state.rsi = 0;
+ saved_state.rbp = 0;
+ saved_state.rsp = stack_top;
+ saved_state.r8 = 0;
+ saved_state.r9 = 0;
+ saved_state.r10 = 0;
+ saved_state.r11 = 0;
+ saved_state.r12 = 0;
+ saved_state.r13 = 0;
+ saved_state.r14 = 0;
+ saved_state.r15 = 0;
+
+ saved_state.rflags = 0x200;
+ saved_state.rip = entry;
+ saved_state.cr3 = owner->memory->p4_paddr;
+ saved_state.in_syscall = false;
+
}
- stream_result socket_stream::set_length(uint64_t) {
- return stream_result::not_sized;
+ void thread::on_end_thread() {
+ owner->memory->unmap_stack(stack_top);
+ if (waiting_for_socket_stream)
+ waiting_for_socket_stream->waiting_to_read.remove(this);
+ else if (waiting_to_accept_from)
+ waiting_to_accept_from->waiting_to_accept.remove(this);
+ else if (waiting_to_connect_to)
+ waiting_to_connect_to->waiting_to_connect.remove(this);
+ else if (waiting_for_input)
+ input::waiting_for_input->remove(this);
}
- socket_stream::~socket_stream() {
- if (our_threads_waiting_to_read.count > 0)
- panic(0x9af5e6);
- if (them_closed)
- delete sock;
- else {
- us_closed = true;
- while (their_threads_waiting_to_read.count > 0) {
- auto *t = their_threads_waiting_to_read.take();
- t->state = thread_state::paused;
- paused_threads->insert(t);
- }
- }
+ void thread::wait_for_socket_stream(socket_stream_end *the_socket_stream) {
+ waiting_for_socket_stream = the_socket_stream;
+ the_socket_stream->waiting_to_read.insert(this);
+ yield();
+ waiting_for_socket_stream = 0;
}
- vfile_stream::vfile_stream(vfile::vfile &&file)
- : file(utility::move(file)), offset(0) {}
-
- stream_result vfile_stream::seek(seek_origin origin, int64_t offset) {
- uint64_t start_at = {};
- switch (origin) {
- case seek_origin::beginning:
- start_at = 0;
- break;
- case seek_origin::end:
- start_at = file.dir_entry.length;
- break;
- case seek_origin::current_position:
- start_at = this->offset;
- break;
- }
- if (offset < 0 && (uint64_t)-offset > start_at)
- return stream_result::out_of_bounds;
- if (offset + start_at > file.dir_entry.length)
- return stream_result::out_of_bounds;
- this->offset = start_at + offset;
- return stream_result::success;
+ utility::maybe<unsigned> thread::wait_to_accept_from(
+ socket_listener *the_socket_listener) {
+ waiting_to_accept_from = the_socket_listener;
+ the_socket_listener->waiting_to_accept.insert(this);
+ yield();
+ waiting_to_accept_from = 0;
+ return new_socket_stream_id;
}
- stream_result vfile_stream::read(uint64_t count, void *into) {
- if (offset + count > file.dir_entry.length)
- return stream_result::out_of_bounds;
- if (file.read_file(offset, count, into) != storage::fs_result::success)
- return stream_result::io_error;
- offset += count;
- return stream_result::success;
+ utility::maybe<unsigned> thread::wait_to_connect_to(
+ socket_listener *the_socket_listener) {
+ waiting_to_connect_to = the_socket_listener;
+ the_socket_listener->waiting_to_connect.insert(this);
+ yield();
+ waiting_to_connect_to = 0;
+ return new_socket_stream_id;
}
- stream_result vfile_stream::write(uint64_t count, const void *from) {
- if (offset + count > file.dir_entry.length)
- return stream_result::out_of_bounds;
- (void)from;
- panic(0x9af5e6);
+ void thread::wait_for_input() {
+ waiting_for_input = false;
+ input::waiting_for_input->insert(this);
+ yield();
+ waiting_for_input = false;
}
- stream_result vfile_stream::get_length(uint64_t &out) {
- out = file.dir_entry.length;
- return stream_result::success;
+ void thread::notify_no_socket_stream() {
+ new_socket_stream_id.has_value = false;
+ paused_threads->insert(this);
}
- stream_result vfile_stream::set_length(uint64_t to) {
- (void)to;
- panic(0x9af5e6);
+ void thread::notify_new_socket_stream(unsigned id) {
+ new_socket_stream_id.has_value = true;
+ new_socket_stream_id.value = id;
+ paused_threads->insert(this);
}
}