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Added thread-safe environment functions

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Also marked the existing functions as unsafe, as they can cause crashes if used in multi-threaded applications.

As a bonus, since the new functions are hashtable based, hint environment lookups are much faster.
This commit is contained in:
Sam Lantinga
2024-09-13 17:00:15 -07:00
parent 16ff7503b7
commit 90e01040c5
49 changed files with 696 additions and 252 deletions
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6
src/process/windows/SDL_windowsprocess.c
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@@ -186,6 +186,7 @@ bool SDL_SYS_CreateProcessWithProperties(SDL_Process *process, SDL_PropertiesID
HANDLE stdin_pipe[2] = { INVALID_HANDLE_VALUE, INVALID_HANDLE_VALUE };
HANDLE stdout_pipe[2] = { INVALID_HANDLE_VALUE, INVALID_HANDLE_VALUE };
HANDLE stderr_pipe[2] = { INVALID_HANDLE_VALUE, INVALID_HANDLE_VALUE };
char **env_copy = NULL;
bool result = false;
// Keep the malloc() before exec() so that an OOM won't run a process at all
@@ -199,6 +200,10 @@ bool SDL_SYS_CreateProcessWithProperties(SDL_Process *process, SDL_PropertiesID
goto done;
}
if (!env) {
env_copy = SDL_GetEnvironmentVariables(SDL_GetEnvironment());
env = (const char * const *)env_copy;
}
if (!join_env(env, &createprocess_env)) {
goto done;
}
@@ -381,6 +386,7 @@ done:
}
SDL_free(createprocess_cmdline);
SDL_free(createprocess_env);
SDL_free(env_copy);
if (!result) {
if (stdin_pipe[WRITE_END] != INVALID_HANDLE_VALUE) {