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This patch removes the global variable 'blocker', which was expected to be constructed via the global ctors. This mechanism, however, is not used for the base library, which resulted in the use of an unconstructed object. Specifically, the spinlock of the 'Lock' of the 'Registry' defaulted to the LOCKED state (value 0), which eventually would lead to a deadlock in the contention case of the cxa guard. I could observe this deadlock once on during the component startup on base-linux during the construction of the 'startup_lock'. This patch fixes the problem by explicitly initializing the registry of blockers via an init function. Issue #2299 Issue #3578
This is generic part of the Genode implementation. It consists of two parts: :_Core_: is the ultimate root of the Genode application tree and provides abstractions for the lowest-level hardware resources such as RAM, ROM, CPU, and generic device access. All generic parts of Core can be found here - for system-specific implementations refer to the appropriate 'base-<system>' directory. :_Base libraries and protocols_: that are used by each Genode component to interact with other components. This is the glue that holds everything together. _Core_ may export information about the hardware platform by an ROM called 'platform_info'. Depending on the platform, e.g. ARM or x86 or riscv, and depending on the boot mode and boot loader and kernel, some nodes may not be populated. !<platform_info> ! <acpi revision="2" rsdt="0x1fe93074" xsdt="0x1fe930e8"/> ! <boot> ! <framebuffer phys="0x7300000" width="1024" height="768" bpp="32"/> ! </boot> !</platform_info> If the ACPI RSDT and XSDT physical pointer is reported by the used kernel and/or bootloader, _Core_ may provide this information by the ROM. If the graphic device is initialised and can be directly used by a framebuffer driver, _Core_ may provide the physical pointer to the framebuffer, the resolution and color depth in bits.