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windows....sigh

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This commit is contained in:
Hans Dijkema
2026-03-26 12:08:55 +01:00
parent 8fe7e726a4
commit b23365b05f
15 changed files with 499 additions and 128 deletions
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private/lib/windows/x86_64/rktwebview.dll
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private/lib/windows/x86_64/rktwebview_prg.exe
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private/lib/windows/x86_64/rktwebview_qt.dll
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private/lib/windows/x86_64/rktwebview_qt_test.exe
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private/lib/windows/x86_64/rktwebview_test.exe
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private/racket-webview-qt.rkt
+16
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@@ -142,7 +142,12 @@
(putenv "QTWEBENGINE_LOCALES_PATH"
(path->string (build-path os-lib-dir "translations" "qtwebengine_locales")))
(putenv "RKT_WEBVIEW_PRG"
(let ((p
(path->string (build-path os-lib-dir rktwebview-prg)))
)
(displayln p)
p
))
(when (eq? os 'linux)
(putenv "QT_QPA_PLATFORM" "xcb")
(putenv "LD_LIBRARY_PATH"
@@ -222,8 +227,19 @@
eval_js_failed = 3
no_devtools_on_platform = 4
no_delegate_for_context = 5
webview_missing_dependency = 6
webview_canceled = 7
webview_invalid_state = 8
webview_invalid_argument = 9
webview_unspecified = 10
webview_dispatch_failed = 11
move_failed = 12
resize_failed = 13
choose_dir_failed = 14
open_file_failed = 15
save_file_failed = 16
failed = 17
invalid_handle = 18
)
)
)
rktwebview_qt/CMakeLists.txt
+1
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@@ -21,6 +21,7 @@ add_library(rktwebview SHARED
rkt_protocol.h
rktwebview_types.h
json.cpp json.h
utils.h
)
add_executable(rktwebview_prg
rktwebview_qt/main.cpp
+9 -7
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@@ -62,8 +62,10 @@ int main(int argc, char *argv[])
{
const char *me = argv[0];
fprintf(stderr, "%s runs\n", argv[0]);fflush(stderr);
if (argc < 6) {
fprintf(stderr, "%s: wrong number of arguments\n", me);
fprintf(stderr, "%s: wrong number of arguments\n", me);fflush(stderr);
exit(1);
}
@@ -78,11 +80,11 @@ int main(int argc, char *argv[])
int res_slot = atoi(res_slot_str);
int evt_slot = atoi(evt_slot_str);
fprintf(stderr, "%s %s %s %s %s %s\n", me, shm_name, shm_size_str, cmd_slot_str, res_slot_str, evt_slot_str);
fprintf(stderr, "%s %s %ld %d %d %d\n", me, shm_name, shm_size, cmd_slot, res_slot, evt_slot);
fprintf(stderr, "%s %s %s %s %s %s\n", me, shm_name, shm_size_str, cmd_slot_str, res_slot_str, evt_slot_str);fflush(stderr);
fprintf(stderr, "%s %s %ld %d %d %d\n", me, shm_name, shm_size, cmd_slot, res_slot, evt_slot);fflush(stderr);
if (!(shm_size > 0 && cmd_slot > 0 && res_slot > 0 && evt_slot > 0)) {
fprintf(stderr, "%s: Invalid shm size or slots\n", me);
fprintf(stderr, "%s: Invalid shm size or slots\n", me);fflush(stderr);
exit(2);
}
@@ -98,10 +100,10 @@ int main(int argc, char *argv[])
handler->webview_handler->initApp();
handler->webview_handler->execApp();
fprintf(stderr, "waiting for thread to end\n");
fprintf(stderr, "waiting for thread to end\n");fflush(stderr);
handler->wait();
fprintf(stderr, "cleaning up shm\n");
fprintf(stderr, "cleaning up shm\n");fflush(stderr);
delete handler->webview_handler;
delete handler->command_queue;
@@ -318,7 +320,7 @@ void Handler::run()
}
break;
default: {
fprintf(stderr, "Unknown command: %d\n", cmd);
fprintf(stderr, "Unknown command: %d\n", cmd);fflush(stderr);
}
}
}
rktwebview_qt/rktwebview.cpp
+102 -22
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@@ -2,13 +2,19 @@
#include <chrono>
#include <stdint.h>
#include <string.h>
#ifdef _WIN32
#include <windows.h>
#include <filesystem>
#else
#include <unistd.h>
#include <spawn.h>
#endif
#include <fcntl.h>
#include "rktwebview.h"
#include "rkt_protocol.h"
#include <spawn.h>
#include "shmqueue.h"
#include "json.h"
#include "utils.h"
#define SHM_SIZE (10 * 1024 * 1024) // 10MB
#define COMMAND_SLOT 1
@@ -28,14 +34,26 @@ typedef struct {
ShmQueue *command_queue;
ShmQueue *command_result_queue;
ShmQueue *event_queue;
#ifdef _WIN32
HANDLE rkt_webview_prg_pid;
#else
pid_t rkt_webview_prg_pid;
#endif
bool rkt_webview_prg_started;
bool valid;
} Handle_t;
Handle_t *handler = nullptr;
static bool fileExists(const char *filename) {
#ifdef _WIN32
DWORD dwAttrib = GetFileAttributes(filename);
return (dwAttrib != INVALID_FILE_ATTRIBUTES &&
!(dwAttrib & FILE_ATTRIBUTE_DIRECTORY));
#else
return access(filename, X_OK) != -1;
#endif
}
uint64_t current_ms() {
@@ -45,29 +63,62 @@ uint64_t current_ms() {
bool runRktWebview(Handle_t *handler)
{
// run rktwebview_prg using the environment variable RKT_WEBVIEW_PRG
#ifdef _WIN32
#else
char *rkt_webview_prg_path = getenv("RKT_WEBVIEW_PRG");
if (rkt_webview_prg_path == nullptr) {
fprintf(stderr, "RKT_WEBVIEW_PRG environment variable not set, cannot start webview program\n");
fprintf(stderr, "RKT_WEBVIEW_PRG environment variable not set, cannot start webview program\n");fflush(stderr);
return false;
}
if (!fileExists(rkt_webview_prg_path)) {
fprintf(stderr, "%s does not exist or is not executable\n", rkt_webview_prg_path);
fprintf(stderr, "%s does not exist or is not executable\n", rkt_webview_prg_path);fflush(stderr);
return false;
}
std::string path = basedir(rkt_webview_prg_path);
char shm_size_str[30];
char command_slot[10];
char command_result_slot[10];
char event_slot[10];
sprintf(shm_size_str, "%ld", handler->shm_size);
sprintf(shm_size_str, "%d", static_cast<int>(handler->shm_size));
sprintf(command_slot, "%d", COMMAND_SLOT);
sprintf(command_result_slot, "%d", COMMAND_RESULT_SLOT);
sprintf(event_slot, "%d", EVENT_SLOT);
// run rktwebview_prg using the environment variable RKT_WEBVIEW_PRG
#ifdef _WIN32
//STARTUPINFO si;
//PROCESS_INFORMATION pi;
//ZeroMemory( &si, sizeof(si) );
//si.cb = sizeof(si);
//ZeroMemory( &pi, sizeof(pi) );
std::string cmdargs = std::string("") + handler->name + " " + shm_size_str + " " + command_slot + " " + command_result_slot + " " + event_slot;
std::string exe = std::string(rkt_webview_prg_path);
const char *td = getenv("TEMP");
if (td == nullptr) { td = "C:\\"; }
std::string tmpdir = td;
std::string logfile = tmpdir + "\\" + "rktwebview.log"; //handler->name + ".log";
std::string errfile = tmpdir + "\\" + "rktwebview.err";
std::string redirect = " ^>" + logfile + " 2^>" + errfile;
std::string cmdline = "start /b \"\" cmd /c \"" + exe + " " + cmdargs + " " + /*redirect*/ + "\"" + redirect;
char *cmdline_str = const_cast<char *>(cmdline.c_str());
auto cwd = std::filesystem::current_path();
std::filesystem::current_path(path);
int r = system(cmdline_str);
std::filesystem::current_path(cwd);
//CreateProcessA(NULL, cmdline_str, NULL, NULL, FALSE, NORMAL_PRIORITY_CLASS, NULL, path.c_str(), &si, &pi);
handler->rkt_webview_prg_pid = 0;
if (r != 0) {
fprintf(stderr, "Cannot create process '%s' (error = %ld)\n", cmdline_str, GetLastError());fflush(stderr);
}
return (r == 0);
#else
char *argv[] = { rkt_webview_prg_path, const_cast<char *>(handler->name.c_str()), shm_size_str, command_slot, command_result_slot, event_slot, nullptr };
int r = posix_spawn(&handler->rkt_webview_prg_pid, rkt_webview_prg_path, nullptr, nullptr, argv, environ);
@@ -108,18 +159,21 @@ void rkt_webview_cleanup()
handler = nullptr;
}
*/
fprintf(stderr, "Sending quit message\n");
handler->command_queue->enqueue(CMD_QUIT);
fprintf(stderr, "Message sent\n");
bool stopped = false;
while(!stopped) {
int cmd;
std::string s;
fprintf(stderr, "Getting result of quit message\n");
handler->command_result_queue->dequeue(cmd, s, true);
fprintf(stderr, "got %d\n", cmd);
if (cmd == RESULT_QUIT) {
stopped = true;
if (handler->valid) {
fprintf(stderr, "Sending quit message\n");fflush(stderr);
handler->command_queue->enqueue(CMD_QUIT);
fprintf(stderr, "Message sent\n");fflush(stderr);
bool stopped = false;
while(!stopped) {
int cmd;
std::string s;
fprintf(stderr, "Getting result of quit message\n");fflush(stderr);
handler->command_result_queue->dequeue(cmd, s, true);
fprintf(stderr, "got %d\n", cmd);fflush(stderr);
if (cmd == RESULT_QUIT) {
stopped = true;
}
}
}
@@ -140,16 +194,23 @@ void rkt_webview_init()
char buf[1024];
#ifdef DEBUG
sprintf(buf, "rktwebview-dbg");
#else
#ifdef _WIN32
DWORD p = GetCurrentProcessId();
sprintf(buf, "rktwebview-%ld", p);
#else
pid_t p = getpid();
sprintf(buf, "rktwebview-%x", p);
#endif
#endif
handler = new Handle_t;
handler->valid = true;
handler->name = buf;
handler->shm_size = SHM_SIZE;
handler->shm = new Shm(handler->name.data(), handler->shm_size, true);
if (!handler->shm->isValid()) { handler->valid = false; }
handler->command_queue = new ShmQueue(handler->shm, COMMAND_SLOT, true);
handler->command_result_queue = new ShmQueue(handler->shm, COMMAND_RESULT_SLOT, true);
handler->event_queue = new ShmQueue(handler->shm, EVENT_SLOT, true);
@@ -157,6 +218,7 @@ void rkt_webview_init()
// Start rktwebview_prg application with the right information
#ifndef DEBUG
handler->rkt_webview_prg_started = runRktWebview(handler);
if (!handler->rkt_webview_prg_started) { handler->valid = false; }
#endif
}
}
@@ -164,7 +226,7 @@ void rkt_webview_init()
bool rkt_webview_valid(rktwebview_t wv)
{
rkt_webview_init();
if (handler != nullptr && handler->rkt_webview_prg_started) {
if (handler != nullptr && handler->valid) {
handler->command_queue->enqueue(CMD_HANDLE_IS_VALID);
int result;
std::string json_result;
@@ -175,9 +237,21 @@ bool rkt_webview_valid(rktwebview_t wv)
}
}
static inline bool validHandle()
{
return (handler != nullptr) && handler->valid;
}
#define FAIL_HANDLE if (!validHandle()) { return result_t::invalid_handle; }
#define FAIL_CONTEXT if (!validHandle()) { return 0; }
#define FAIL_WV if (!validHandle()) { return 0; }
#define NOOP_HANDLE if (!validHandle()) { return; }
#define FAIL_CALL_JS if (!validHandle()) { return nullptr; }
rkt_wv_context_t rkt_webview_new_context(const char *boilerplate_js, const char *optional_server_cert_pem)
{
rkt_webview_init();
FAIL_CONTEXT
JSON j;
@@ -200,6 +274,8 @@ rkt_wv_context_t rkt_webview_new_context(const char *boilerplate_js, const char
int rkt_webview_create(rkt_wv_context_t context, rktwebview_t parent)
{
rkt_webview_init();
FAIL_WV
JSON j;
j["context"] = context;
j["parent"] = parent;
@@ -216,6 +292,7 @@ int rkt_webview_create(rkt_wv_context_t context, rktwebview_t parent)
void rkt_webview_close(rktwebview_t wv)
{
rkt_webview_init();
NOOP_HANDLE
JSON j;
j["wv"] = wv;
@@ -224,6 +301,7 @@ void rkt_webview_close(rktwebview_t wv)
#define CMDRES4(cmd, wv, key, val, key2, val2, key3, val3, key4, val4) \
rkt_webview_init(); \
FAIL_HANDLE \
JSON j; \
j["wv"] = wv; \
j[key] = val; \
@@ -268,6 +346,7 @@ result_t rkt_webview_run_js(rktwebview_t wv, const char *js)
rkt_data_t *rkt_webview_call_js(rktwebview_t wv, const char *js)
{
rkt_webview_init();
FAIL_CALL_JS
JSON j;
j["wv"] = wv;
@@ -380,6 +459,7 @@ result_t rkt_webview_file_save(rktwebview_t w, const char *title, const char *ba
void rkt_webview_set_ou_token(rktwebview_t wv, const char *token)
{
rkt_webview_init();
NOOP_HANDLE
JSON j;
j["wv"] = wv;
@@ -401,7 +481,7 @@ void rkt_webview_free_data(rkt_data_t *d)
free(d->data.js_result.value);
free(d);
} else {
fprintf(stderr, "UNEXPECTED: data kind %d cannot be freed\n", d->kind);
fprintf(stderr, "UNEXPECTED: data kind %d cannot be freed\n", d->kind);fflush(stderr);
}
}
@@ -440,7 +520,7 @@ rkt_data_t *rkt_webview_get_event()
memcpy(d->data.event.event, data.c_str(), ds);
d->data.event.event[ds] = '\0';
d->data.event.wv = wv;
fprintf(stderr, "event: %d - '%s'\n", d->data.event.wv, d->data.event.event);
//fprintf(stderr, "event: %d - '%s'\n", d->data.event.wv, d->data.event.event);fflush(stderr);
return d;
} else {
return nullptr;
rktwebview_qt/rktwebview_qt.cpp
+3
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@@ -31,6 +31,7 @@ void Rktwebview_qt::processCommand(Command *cmd)
switch(cmd->cmd) {
case COMMAND_QUIT: { // Quit application
_app->quit();
cmd->done = true;
}
break;
case COMMAND_NEW_CONTEXT: {
@@ -640,6 +641,8 @@ void Rktwebview_qt::rktQuit()
{
Command c(COMMAND_QUIT);
postCommand(&c);
while(!c.done) { doEvents(); }
}
result_t Rktwebview_qt::fileDlg(rktwebview_t w, const char *title, const char *base, const char *filters,QFileDialog::FileMode mode, QFileDialog::AcceptMode am, QString evt_ok, QString evt_cancel)
rktwebview_qt/rktwebview_test.cpp
+25 -3
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@@ -1,16 +1,34 @@
#include "rktwebview.h"
#include <string>
#ifdef _WIN32
#include <windows.h>
#else
#include <unistd.h>
#endif
#include "utils.h"
int main(int argc, char *argv[])
{std::string me = argv[0];
int idx = me.rfind("/");
{
std::string me = argv[0];
std::string loc = me.substr(0, idx);
std::string loc = basedir(me);
#ifdef _WIN32
std::string prg = loc + "\\rktwebview_prg.exe";
SetDllDirectoryA("C:\\Qt\\6.10.2\\msvc2022_64\\bin");
#else
std::string prg = loc + "/rktwebview_prg";
#endif
#ifdef _WIN32
{
std::string e = std::string("RKT_WEBVIEW_PRG=") + prg;
_putenv(e.c_str());
}
#else
setenv("RKT_WEBVIEW_PRG", prg.c_str(), true);
setenv("LD_LIBRARY_PATH", loc.c_str(), true);
#endif
int context = rkt_webview_new_context("", nullptr);
@@ -24,7 +42,11 @@ int main(int argc, char *argv[])
rkt_data_t *d = rkt_webview_get_event();
rkt_webview_free_data(d);
}
#ifdef _WIN32
Sleep(10);
#else
sleep(10);
#endif
rkt_webview_close(wv);
rktwebview_qt/rktwebview_types.h
+2 -1
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@@ -30,7 +30,8 @@ typedef enum {
choose_dir_failed = 14,
open_file_failed = 15,
save_file_failed = 16,
failed = 17
failed = 17,
invalid_handle = 18
} result_t;
typedef struct {
rktwebview_qt/shm.cpp
+306 -91
View File
@@ -1,17 +1,6 @@
#include "shm.h"
#ifdef __linux
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <sys/shm.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <unistd.h>
#include <errno.h>
#include <semaphore.h>
#include <stdio.h>
typedef struct __shm_item__ {
@@ -22,35 +11,26 @@ typedef struct __shm_item__ {
} ShmItem;
class ShmApi
class ShmApiBase
{
private:
int _shm_fd;
size_t _size;
bool _owner;
void *_mem;
sem_t *_sem;
protected:
char *_mem;
char *_mem_name;
char *_sem_name;
size_t *_used;
int *_used;
ShmPlace *_slots;
ShmPlace *_first;
ShmPlace *_free_list;
char *_mem_name;
char *_sem_name;
int _in_critical;
private:
void cleanup() {
// We don't need to do anything here.
}
size_t _size;
bool _owner;
public:
ShmSem *makeSem(const char *name, bool owner) {
return new ShmSem(name, owner);
}
virtual void enterCritical() = 0;
virtual void leaveCritical() = 0;
public:
int slot(int s) {
@@ -71,7 +51,7 @@ public:
if (place == SHM_NULL) {
*p = nullptr;
} else {
*p = reinterpret_cast<T *>(reinterpret_cast<char *>(_mem) + place);
*p = reinterpret_cast<T *>(_mem + place);
}
}
@@ -81,7 +61,7 @@ public:
return nullptr;
}
return reinterpret_cast<char *>(_mem) + place;
return _mem + place;
}
public:
@@ -125,7 +105,7 @@ public:
} else {
ShmPlace p_i = *_used;
i = reinterpret_cast<ShmItem *>(reinterpret_cast<char *>(_mem) + p_i);
size_t u = *_used + sizeof(ShmItem) + bytes;
int u = static_cast<int>(*_used + sizeof(ShmItem) + bytes);
if (u >= _size) {
place = SHM_NULL;
@@ -185,6 +165,66 @@ public:
leaveCritical();
}
public:
ShmSem *makeSem(const char *name, bool owner) {
return new ShmSem(name, owner);
}
public:
ShmApiBase(const char *name, size_t size, bool owner) {
char *buf = reinterpret_cast<char *>(malloc(strlen(name) + 50));
sprintf(buf, "sem_%s", name);
_sem_name = _strdup(buf);
_mem_name = _strdup(name);
::free(buf);
_owner = owner;
_size = size;
_used = nullptr;
_slots = nullptr;
_first = nullptr;
_free_list = nullptr;
_mem = nullptr;
_in_critical = 0;
}
virtual ~ShmApiBase()
{
::free(_sem_name);
::free(_mem_name);
}
};
#ifdef __linux
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <sys/shm.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <unistd.h>
#include <errno.h>
#include <semaphore.h>
class ShmApi : public ShmApiBase
{
private:
int _shm_fd;
sem_t *_sem;
private:
void cleanup() {
// We don't need to do anything here.
}
public:
void enterCritical() {
if (_in_critical > 0) {
_in_critical++;
@@ -204,19 +244,17 @@ public:
}
public:
ShmApi(const char *name, size_t size, bool owner) {
{
char buf[strlen(name) + 50];
sprintf(buf, "sem_%s", name);
_sem_name = strdup(buf);
_mem_name = strdup(name);
}
bool isValid() {
return true;
}
public:
ShmApi(const char *name, size_t size, bool owner) : ShmApiBase(name, size, owner)
{
size_t slots_size = sizeof(ShmPlace) * SHM_MAX_SLOTS;
size += slots_size;
if (owner) {
if (_owner) {
_sem = sem_open(_sem_name, O_RDWR | O_CREAT, S_IRUSR | S_IWUSR, 0);
_shm_fd = shm_open(name, O_CREAT | O_RDWR, 0600);
ftruncate(_shm_fd, size);
@@ -224,21 +262,18 @@ public:
_sem = sem_open(_sem_name, O_RDWR, S_IRUSR | S_IWUSR, 0);
_shm_fd = shm_open(name, O_RDWR, 0600);
}
_size = size;
_mem = mmap(nullptr, _size, PROT_READ|PROT_WRITE, MAP_SHARED, _shm_fd, 0);
_slots = reinterpret_cast <ShmPlace *>(reinterpret_cast<char *>(_mem) + sizeof(size_t) + sizeof(ShmPlace) + sizeof(ShmPlace));
_used = reinterpret_cast<size_t *>(_mem);
_slots = reinterpret_cast <ShmPlace *>(_mem + sizeof(int) + sizeof(ShmPlace) + sizeof(ShmPlace));
_used = reinterpret_cast<int *>(_mem);
_first = reinterpret_cast<ShmPlace *>(reinterpret_cast<char *>(_mem) + sizeof(size_t));
_free_list = reinterpret_cast<ShmPlace *>(reinterpret_cast<char *>(_mem) + sizeof(size_t) + sizeof(ShmPlace));
_owner = owner;
_first = reinterpret_cast<ShmPlace *>(_mem + sizeof(int));
_free_list = reinterpret_cast<ShmPlace *>(_mem + sizeof(int) + sizeof(ShmPlace));
if (_owner) {
*_first = SHM_NULL;
*_free_list = SHM_NULL;
*_used = sizeof(size_t) + sizeof(ShmItem *) + sizeof(ShmItem *) + slots_size;
*_used = sizeof(int) + sizeof(ShmItem *) + sizeof(ShmItem *) + slots_size;
sem_post(_sem);
}
@@ -254,44 +289,241 @@ public:
shm_unlink(_mem_name);
sem_unlink(_sem_name);
}
::free(_mem_name);
::free(_sem_name);
}
};
class ShmSemApi {
private:
sem_t *_sem;
char *_name;
bool _owner;
public:
void post() {
sem_post(_sem);
}
void wait() {
int r = sem_wait(_sem);
if (r != 0) {
fprintf(stderr, "sem_wait error: %d, %s\n", errno, strerror(errno));
}
}
bool trywait() {
int r = sem_trywait(reinterpret_cast<sem_t *>(_sem));
if (r != 0 && r != EAGAIN) {
fprintf(stderr, "sem_wait error: %d, %s\n", errno, strerror(errno));
}
return (r == 0);
}
public:
ShmSemApi(const char *n, bool owner) {
_name = strdup(n);
sem_t *s;
if (owner) {
s = sem_open(n, O_RDWR | O_CREAT, S_IRUSR | S_IWUSR, 0);
} else {
s = sem_open(n, O_RDWR, S_IRUSR | S_IWUSR, 0);
}
_sem = s;
_owner = owner;
}
virtual ~ShmSemApi() {
sem_close(_sem);
if (_owner) {
sem_unlink(_name);
}
free(_name);
}
};
};
public:
};
#endif
#ifdef _WIN32
class ShmApi
#include <windows.h>
class ShmApi : public ShmApiBase
{
private:
HANDLE _shm_handle;
HANDLE _sem_handle;
bool _valid;
public:
ShmApi(const char *name, size_t size, bool owner)
ShmApi(const char *name, size_t size, bool owner) : ShmApiBase(name, size, owner)
{
size_t slots_size = sizeof(ShmPlace) * SHM_MAX_SLOTS;
size += slots_size;
_valid = true;
if (_owner) {
_shm_handle = CreateFileMappingA(INVALID_HANDLE_VALUE,
NULL,
PAGE_READWRITE,
0,
static_cast<DWORD>(size), // size must be smaller < 2GB
name);
if (_shm_handle == NULL) {
fprintf(stderr, "Cannot create shared memory with name %s and size %lld\n", name, size);
_valid = false;
}
} else {
_shm_handle = OpenFileMappingA(FILE_MAP_ALL_ACCESS,
FALSE,
name);
if (_shm_handle == NULL) {
fprintf(stderr, "Cannot open shared memory with name %s\n", name);
_valid = false;
}
}
if (_valid) {
_mem = static_cast<LPSTR>(MapViewOfFile(_shm_handle,
FILE_MAP_ALL_ACCESS,
0,
0,
size));
if (_mem == NULL) {
fprintf(stderr, "Cannot map shared memory, errorcode = %ld\n", GetLastError());
_valid = false;
CloseHandle(_shm_handle);
}
}
if (_valid) {
if (_owner) {
_sem_handle = CreateSemaphoreA(NULL,
1,
10000,
_sem_name
);
} else {
_sem_handle = OpenSemaphoreA(SYNCHRONIZE|SEMAPHORE_MODIFY_STATE, FALSE, _sem_name);
}
if (_sem_handle == NULL) {
fprintf(stderr, "Cannot create or open semaphore with name '%s' (%ld)\n", _sem_name, GetLastError());
UnmapViewOfFile(_mem);
CloseHandle(_shm_handle);
_valid = false;
}
}
if (_valid) {
_slots = reinterpret_cast <ShmPlace *>(_mem + sizeof(int) + sizeof(ShmPlace) + sizeof(ShmPlace));
_used = reinterpret_cast<int *>(_mem);
_first = reinterpret_cast<ShmPlace *>(_mem + sizeof(int));
_free_list = reinterpret_cast<ShmPlace *>(_mem + sizeof(int) + sizeof(ShmPlace));
if (_owner) {
*_first = SHM_NULL;
*_free_list = SHM_NULL;
*_used = sizeof(int) + sizeof(ShmItem *) + sizeof(ShmItem *) + slots_size;
}
}
}
~ShmApi()
{
if (_valid) {
UnmapViewOfFile(_mem);
CloseHandle(_shm_handle);
CloseHandle(_sem_handle);
}
}
bool isValid() {
return _valid;
}
void enterCritical()
{
if (_in_critical > 0) {
_in_critical++;
} else {
WaitForSingleObject(_sem_handle, INFINITE);
_in_critical = 1;
}
}
void leaveCritical()
{
if (_in_critical > 1) {
_in_critical--;
} else {
_in_critical = 0;
ReleaseSemaphore(_sem_handle, 1, NULL);
}
}
void *alloc(size_t bytes)
ShmSem *sem(const char *name, bool owner)
{
return malloc(bytes);
return nullptr;
}
};
class ShmSemApi {
private:
HANDLE _sem;
char *_name;
bool _owner;
public:
void post() {
ReleaseSemaphore(_sem, 1, NULL);
}
void free(void *mem)
{
free(mem);
void wait() {
DWORD r = WaitForSingleObject(_sem, INFINITE);
if (r != WAIT_OBJECT_0) {
fprintf(stderr, "sem_wait error: %ld\n", r);
}
}
}
bool trywait() {
DWORD r = WaitForSingleObject(_sem , 0);
if (r != WAIT_OBJECT_0 && r != WAIT_TIMEOUT) {
fprintf(stderr, "sem_wait error: %ld\n", r);
}
return r == WAIT_OBJECT_0;
}
public:
ShmSemApi(const char *n, bool owner) {
_name = _strdup(n);
if (owner) {
_sem = CreateSemaphoreA(NULL,
0,
10000,
_name);
} else {
_sem = OpenSemaphoreA(SYNCHRONIZE|SEMAPHORE_MODIFY_STATE, FALSE, _name);
}
if (_sem == NULL) {
fprintf(stderr, "Cannot create or open semaphore with name '%s'\n", _name);
}
_owner = owner;
}
virtual ~ShmSemApi() {
if (_sem != NULL) {
CloseHandle(_sem);
}
}
};
#endif
@@ -326,6 +558,11 @@ ShmSem *Shm::sem(const char *name, bool owner)
return _shm_api->makeSem(name, owner);
}
bool Shm::isValid()
{
return _shm_api->isValid();
}
const char *Shm::name()
{
return _shm_api->name();
@@ -352,44 +589,22 @@ Shm::~Shm()
}
void ShmSem::post() {
sem_post(reinterpret_cast<sem_t *>(_sem));
_api->post();
}
void ShmSem::wait() {
int r = sem_wait(reinterpret_cast<sem_t *>(_sem));
if (r != 0) {
fprintf(stderr, "sem_wait error: %d, %s\n", errno, strerror(errno));
}
_api->wait();
}
bool ShmSem::trywait() {
int r = sem_trywait(reinterpret_cast<sem_t *>(_sem));
if (r != 0 && r != EAGAIN) {
fprintf(stderr, "sem_wait error: %d, %s\n", errno, strerror(errno));
}
return (r == 0);
return _api->trywait();
}
ShmSem::ShmSem(const char *n, bool owner) {
_name = strdup(n);
sem_t *s;
if (owner) {
s = sem_open(n, O_RDWR | O_CREAT, S_IRUSR | S_IWUSR, 0);
} else {
s = sem_open(n, O_RDWR, S_IRUSR | S_IWUSR, 0);
}
_sem = reinterpret_cast<void *>(s);
_owner = owner;
_api = new ShmSemApi(n, owner);
}
ShmSem::~ShmSem() {
sem_close(reinterpret_cast<sem_t *>(_sem));
if (_owner) {
sem_unlink(_name);
}
free(_name);
delete _api;
}
rktwebview_qt/shm.h
+5 -3
View File
@@ -4,6 +4,7 @@
#include <stdlib.h>
class ShmApi;
class ShmSemApi;
typedef int ShmPlace;
typedef int ShmSlot;
@@ -12,9 +13,7 @@ typedef int ShmSlot;
class ShmSem {
private:
void *_sem;
char *_name;
bool _owner;
ShmSemApi *_api;
public:
void post();
@@ -44,6 +43,9 @@ public:
public:
ShmSem *sem(const char *name, bool owner);
public:
bool isValid();
public:
const char *name();
rktwebview_qt/utils.h
+29
View File
@@ -0,0 +1,29 @@
#ifndef UTILS_H
#define UTILS_H
#include <string>
inline std::string basedir(const std::string &path)
{
int idx1 = path.rfind("/");
int idx2 = path.rfind("\\");
std::string r;
if (idx1 == std::string::npos && idx2 == std::string::npos) {
r = "";
} else {
int idx;
if (idx1 == std::string::npos) {
idx = idx2;
} else if (idx2 == std::string::npos) {
idx = idx1;
} else if (idx1 < idx2) {
idx = idx2;
} else {
idx = idx1;
}
r = path.substr(0, idx);
}
return r;
}
#endif // UTILS_H