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upd: [imp] improve interface of system

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This commit is contained in:
mutouyun 2022-11-06 17:57:07 +08:00
parent 94cae29b42
commit 375c25bd1e
3 changed files with 15 additions and 8 deletions
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2
include/libimp/system.h
View File

@ -61,7 +61,7 @@ public:
enum class info : std::int32_t {
page_size,
};
LIBIMP_EXPORT std::int64_t conf(info) noexcept;
LIBIMP_EXPORT result<std::int64_t> conf(info) noexcept;
} // namespace sys
LIBIMP_NAMESPACE_END_

17
src/libimp/platform/posix/system.h
View File

@ -14,13 +14,17 @@
LIBIMP_NAMESPACE_BEG_
namespace sys {
#ifndef ENOERR
#define ENOERR (0)
#endif
/**
* @brief Get the system error code
* https://man7.org/linux/man-pages/man3/errno.3.html
*/
result_code error_code() noexcept {
auto err = errno;
if (err == 0) return {true};
if (err == ENOERR) return {ENOERR};
return {false, std::uint64_t(err)};
}
@ -29,7 +33,7 @@ result_code error_code() noexcept {
* https://man7.org/linux/man-pages/man3/errno.3.html
*/
void error_code(result_code code) noexcept {
errno = code ? 0 : (int)code.value();
errno = code ? ENOERR : (int)code.value();
}
/**
@ -56,7 +60,7 @@ std::string error_str(result_code code) noexcept {
* https://man7.org/linux/man-pages/man2/getpagesize.2.html
* https://man7.org/linux/man-pages/man3/sysconf.3.html
*/
std::int64_t conf(info r) noexcept {
result<std::int64_t> conf(info r) noexcept {
LIBIMP_LOG_();
switch (r) {
case info::page_size: {
@ -66,10 +70,11 @@ std::int64_t conf(info r) noexcept {
}
default:
log.error("invalid info = {}", enum_cast(r));
return -1;
return {};
}
log.error("info = {}, error = {}", enum_cast(r), error_msg(error_code()));
return -1;
auto err = sys::error();
log.error("info = {}, error = {}", enum_cast(r), err);
return {false, (int)err.value()};
}
} // namespace sys

4
test/test_imp_system.cpp
View File

@ -67,5 +67,7 @@ TEST(system, error_str) {
}
TEST(system, conf) {
EXPECT_EQ(imp::sys::conf(imp::sys::info::page_size), 4096);
auto ret = imp::sys::conf(imp::sys::info::page_size);
EXPECT_TRUE(ret);
EXPECT_EQ(ret.value(), 4096);
}