Difference between revisions of "WebAssembly/Globals"
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WebAssembly globals have the following restrictions: | WebAssembly globals have the following restrictions: | ||
| − | + | * they can be only one of 4 types - 32-bit int, 64-bit int, single (float32) or double (float64) | |
| − | + | * their address cannot be taken | |
| − | + | * in a multithreaded environment, they are usually not shared between threads, i.e. they behave like threadvars | |
[[Category:WebAssembly]] | [[Category:WebAssembly]] | ||
Revision as of 14:19, 22 July 2022
WebAssembly supports a feature, called "global variables" or just "globals". They differ from global variables in Pascal. This page discusses the possibility of extending FPC, in order to be able to declare WebAssembly globals from Pascal code.
Differences between Pascal global variables and WebAssembly globals
WebAssembly globals have the following restrictions:
- they can be only one of 4 types - 32-bit int, 64-bit int, single (float32) or double (float64)
- their address cannot be taken
- in a multithreaded environment, they are usually not shared between threads, i.e. they behave like threadvars
