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Fix defer() thread safety issues on multi-core platforms (#9317)

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Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
This commit is contained in:
J. Nick Koston
2025-07-07 10:01:51 +12:00
committed by GitHub
co-authored by Copilot
parent 8da322fe9e
commit b6fade7339
13 changed files with 654 additions and 96 deletions
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esphome/core/helpers.cpp
+8 -1
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@@ -645,7 +645,7 @@ void hsv_to_rgb(int hue, float saturation, float value, float &red, float &green
}
// System APIs
#if defined(USE_ESP8266) || defined(USE_RP2040) || defined(USE_HOST)
#if defined(USE_ESP8266) || defined(USE_RP2040)
// ESP8266 doesn't have mutexes, but that shouldn't be an issue as it's single-core and non-preemptive OS.
Mutex::Mutex() {}
Mutex::~Mutex() {}
@@ -658,6 +658,13 @@ Mutex::~Mutex() {}
void Mutex::lock() { xSemaphoreTake(this->handle_, portMAX_DELAY); }
bool Mutex::try_lock() { return xSemaphoreTake(this->handle_, 0) == pdTRUE; }
void Mutex::unlock() { xSemaphoreGive(this->handle_); }
#elif defined(USE_HOST)
// Host platform uses std::mutex for proper thread synchronization
Mutex::Mutex() { handle_ = new std::mutex(); }
Mutex::~Mutex() { delete static_cast<std::mutex *>(handle_); }
void Mutex::lock() { static_cast<std::mutex *>(handle_)->lock(); }
bool Mutex::try_lock() { return static_cast<std::mutex *>(handle_)->try_lock(); }
void Mutex::unlock() { static_cast<std::mutex *>(handle_)->unlock(); }
#endif
#if defined(USE_ESP8266)