/*
* Create and open a new shared memory object.
* Returns an invalid object if the operation failed or the filename already exists.
*/
static inline
carla_shm_t carla_shm_create(const char* const filename) noexcept
{
CARLA_SAFE_ASSERT_RETURN(filename != nullptr && filename[0] != '\0', gNullCarlaShm);
carla_shm_t ret;
#ifdef CARLA_OS_WIN
ret.map = INVALID_HANDLE_VALUE;
ret.isServer = true;
ret.filename = carla_strdup_safe(filename);
#else
try {
ret.fd = ::shm_open(filename, O_CREAT|O_EXCL|O_RDWR, 0600);
ret.filename = (ret.fd >= 0) ? carla_strdup_safe(filename) : nullptr;
ret.size = 0;
if (ret.fd >= 0 && ret.filename == nullptr)
{
::close(ret.fd);
::shm_unlink(filename);
ret.fd = -1;
}
} CARLA_SAFE_EXCEPTION_RETURN("carla_shm_create", gNullCarlaShm);
#endif
return ret;
}
/*
* Attach to an existing shared memory object.
*/
static inline
carla_shm_t carla_shm_attach(const char* const filename) noexcept
{
CARLA_SAFE_ASSERT_RETURN(filename != nullptr && filename[0] != '\0', gNullCarlaShm);
carla_shm_t ret;
#ifdef CARLA_OS_WIN
ret.map = INVALID_HANDLE_VALUE;
ret.isServer = false;
ret.filename = carla_strdup_safe(filename);
#else
try {
ret.fd = ::shm_open(filename, O_RDWR, 0);
ret.filename = nullptr;
ret.size = 0;
} CARLA_SAFE_EXCEPTION_RETURN("carla_shm_attach", gNullCarlaShm);
#endif
return ret;
}
static void test_CarlaUtils()
{
// ----------------------------------------------------------------------------------------------------------------
// misc functions
{
bool2str(false);
bool2str(true);
pass();
char strBuf[2];
nullStrBuf(strBuf);
char* const strBuf2(strBuf+1);
nullStrBuf(strBuf2);
}
// ----------------------------------------------------------------------------------------------------------------
// string print functions
{
carla_debug("DEBUG");
carla_stdout("STDOUT %s", bool2str(true));
carla_stderr("STDERR %s", bool2str(false));
carla_stderr2("STDERR2 " P_UINT64, 0xffffffff); // 4294967295
}
// ----------------------------------------------------------------------------------------------------------------
// carla_*sleep
{
carla_sleep(1);
carla_msleep(1);
}
// ----------------------------------------------------------------------------------------------------------------
// carla_setenv
{
carla_setenv("THIS", "THAT");
assert(std::strcmp(std::getenv("THIS"), "THAT") == 0);
carla_unsetenv("THIS");
assert(std::getenv("THIS") == nullptr);
}
// ----------------------------------------------------------------------------------------------------------------
// carla_strdup
{
// with variables
const char* const str1(carla_strdup("stringN"));
const char* const strF(carla_strdup_free(strdup("stringF")));
const char* const str2(carla_strdup_safe("stringS"));
delete[] str1;
delete[] str2;
delete[] strF;
// without variables
delete[] carla_strdup("string_normal");
delete[] carla_strdup_free(strdup("string_free"));
delete[] carla_strdup_safe("string_safe");
}
{
// common use case in Carla code
struct TestStruct {
const char* strNull;
const char* strNormal;
const char* strFree;
const char* strSafe;
TestStruct()
: strNull(nullptr),
strNormal(carla_strdup("strNormal")),
strFree(carla_strdup_free(strdup("strFree"))),
strSafe(carla_strdup_safe("strSafe")) {}
~TestStruct() noexcept
{
if (strNull != nullptr)
{
delete[] strNull;
strNull = nullptr;
}
if (strNormal != nullptr)
{
delete[] strNormal;
strNormal = nullptr;
}
if (strFree != nullptr)
{
delete[] strFree;
strFree = nullptr;
}
if (strSafe != nullptr)
{
delete[] strSafe;
strSafe = nullptr;
}
}
CARLA_DECLARE_NON_COPY_STRUCT(TestStruct)
};
TestStruct a, b, c;
}
// ----------------------------------------------------------------------------------------------------------------
// memory functions
{
int a1[] = { 4, 3, 2, 1 };
int a2[] = { 4, 3, 2, 1 };
int b1[] = { 1, 2, 3, 4 };
int b2[] = { 1, 2, 3, 4 };
carla_add(a1, b1, 4);
assert(a1[0] == 5);
assert(a1[1] == 5);
assert(a1[2] == 5);
assert(a1[3] == 5);
carla_add(b1, a2, 4);
assert(b1[0] == 5);
assert(b1[1] == 5);
assert(b1[2] == 5);
assert(b1[3] == 5);
assert(a1[0] == b1[0]);
assert(a1[1] == b1[1]);
assert(a1[2] == b1[2]);
assert(a1[3] == b1[3]);
carla_copy(a1, b2, 4);
assert(a1[0] != b1[0]);
assert(a1[1] != b1[1]);
assert(a1[2] != b1[2]);
assert(a1[3] != b1[3]);
assert(a1[0] == b2[0]);
assert(a1[1] == b2[1]);
assert(a1[2] == b2[2]);
assert(a1[3] == b2[3]);
carla_copy(a1, b1, 4);
assert(a1[0] == b1[0]);
assert(a1[1] == b1[1]);
assert(a1[2] == b1[2]);
assert(a1[3] == b1[3]);
carla_copy(a1, b2, 2);
assert(a1[0] != b1[0]);
assert(a1[1] != b1[1]);
assert(a1[2] == b1[2]);
assert(a1[3] == b1[3]);
carla_copy(a1+2, b2+2, 2);
assert(a1[0] != b1[0]);
assert(a1[1] != b1[1]);
assert(a1[2] != b1[2]);
assert(a1[3] != b1[3]);
carla_copy(a1, b1, 2);
assert(a1[0] == b1[0]);
assert(a1[1] == b1[1]);
assert(a1[2] != b1[2]);
assert(a1[3] != b1[3]);
carla_copy(a1+2, b1+2, 2);
assert(a1[0] == b1[0]);
assert(a1[1] == b1[1]);
assert(a1[2] == b1[2]);
assert(a1[3] == b1[3]);
carla_fill(a1, 0, 4);
assert(a1[0] == 0);
assert(a1[1] == 0);
assert(a1[2] == 0);
assert(a1[3] == 0);
carla_fill(a1, -11, 4);
assert(a1[0] == -11);
assert(a1[1] == -11);
assert(a1[2] == -11);
assert(a1[3] == -11);
carla_fill(a1, 1791, 2);
assert(a1[0] == 1791);
assert(a1[1] == 1791);
assert(a1[2] == -11);
assert(a1[3] == -11);
carla_fill(a1+2, 1791, 2);
assert(a1[0] == 1791);
assert(a1[1] == 1791);
assert(a1[2] == 1791);
assert(a1[3] == 1791);
int16_t d = 1527, e = 0;
carla_add(&d, &d, 1);
assert(d == 1527*2);
carla_add(&d, &d, 1);
assert(d == 1527*4);
carla_add(&d, &e, 1);
assert(d == 1527*4);
assert(e == 0);
carla_add(&e, &d, 1);
assert(d == e);
carla_add(&e, &d, 1);
assert(e == d*2);
d = -e;
carla_add(&d, &e, 1);
assert(d == 0);
}
{
bool x;
const bool f = false, t = true;
carla_copy(&x, &t, 1);
assert(x);
carla_copy(&x, &f, 1);
assert(! x);
carla_fill(&x, true, 1);
assert(x);
carla_fill(&x, false, 1);
assert(! x);
}
{
uint8_t a[] = { 3, 2, 1, 0 };
carla_zeroBytes(a, 1);
assert(a[0] == 0);
assert(a[1] == 2);
assert(a[2] == 1);
assert(a[3] == 0);
carla_zeroBytes(a+1, 2);
assert(a[0] == 0);
assert(a[1] == 0);
assert(a[2] == 0);
assert(a[3] == 0);
}
{
char a[501];
for (int i=500; --i>=0;)
a[i] = 'a';
carla_zeroChars(a, 501);
for (int i=501; --i>=0;)
assert(a[i] == '\0');
for (int i=500; --i>=0;)
a[i] = 'a';
assert(std::strlen(a) == 500);
carla_fill(a+200, '\0', 1);
assert(std::strlen(a) == 200);
}
{
void* a[33];
carla_zeroPointers(a, 33);
for (int i=33; --i>=0;)
assert(a[i] == nullptr);
}
{
struct Thing {
char c;
int i;
int64_t h;
bool operator==(const Thing& t) const noexcept
{
return (t.c == c && t.i == i && t.h == h);
}
bool operator!=(const Thing& t) const noexcept
{
return !operator==(t);
}
};
Thing a, b, c;
a.c = 0;
a.i = 0;
a.h = 0;
b.c = 64;
b.i = 64;
b.h = 64;
c = a;
carla_copyStruct(a, b);
assert(a == b);
carla_zeroStruct(a);
assert(a == c);
carla_copyStruct(c, b);
assert(a != c);
// make it non-zero
a.c = 1;
Thing d[3];
carla_zeroStructs(d, 3);
assert(d[0] != a);
assert(d[1] != b);
assert(d[2] != c);
carla_copyStructs(d, &a, 1);
assert(d[0] == a);
assert(d[1] != b);
assert(d[2] != c);
carla_copyStructs(&c, d+2, 1);
assert(d[0] == a);
assert(d[1] != b);
assert(d[2] == c);
}
}
